WEBVTT

NOTE Competition and Monopoly

1
00:00:00.000 --> 00:00:05.120
Our subject for this afternoon is competition and monopoly and this is a particularly important

2
00:00:05.120 --> 00:00:14.120
subject for applied economic analysis because the notions of competition and monopoly or

3
00:00:14.120 --> 00:00:21.680
competitive and monopolistic, monopolized have been widely abused not only in the academic

4
00:00:21.680 --> 00:00:25.240
literature but certainly in the popular literature as well.

5
00:00:25.240 --> 00:00:32.000
So you often hear policy makers and pundits discourse on one market being more competitive

6
00:00:32.000 --> 00:00:38.600
than another and what the government needs to do to assure that markets are competitive.

7
00:00:38.600 --> 00:00:42.720
About the worst thing that you can say about a firm these days is that it has monopoly

8
00:00:42.720 --> 00:00:45.040
power or market power.

9
00:00:45.040 --> 00:00:49.720
To accuse an entrepreneur of possessing or exploiting market power is about the worst

10
00:00:49.720 --> 00:00:52.720
thing that you can say.

11
00:00:52.720 --> 00:00:58.800
And as we'll get into later, there's a vast apparatus of antitrust law and other forms

12
00:00:58.800 --> 00:01:05.040
of competition policy within countries and across countries designed to remedy alleged

13
00:01:05.040 --> 00:01:08.680
defects in the competitiveness of markets.

14
00:01:08.680 --> 00:01:14.880
And these policies can have very serious and harmful effects on economic performance, as

15
00:01:14.880 --> 00:01:17.760
we'll see in just a few moments.

16
00:01:17.760 --> 00:01:23.640
What I want to do is start, where I always like to start, with the basics, the fundamentals,

17
00:01:23.640 --> 00:01:29.800
some of the most simplest cases that we can use to illustrate sort of principles of pricing

18
00:01:29.800 --> 00:01:34.720
as they relate to characteristics of markets, characteristics of buyers and sellers, numbers

19
00:01:34.720 --> 00:01:37.080
of buyers and sellers and so on.

20
00:01:37.080 --> 00:01:43.440
You know, what do we mean by competition?

21
00:01:43.440 --> 00:01:48.400
What is a competitive or less competitive situation?

22
00:01:48.400 --> 00:01:55.360
The common sense notion of competitive or competition implies some kind of rivalrous

23
00:01:55.360 --> 00:01:56.360
behavior.

24
00:01:56.360 --> 00:01:58.960
A competition is a rivalry.

25
00:01:58.960 --> 00:02:04.400
We talk about the intense competition between the Auburn University football team and the

26
00:02:04.400 --> 00:02:09.320
University of Alabama football team.

27
00:02:09.320 --> 00:02:27.320
We say that Roger Federer and, what's Nadal's first name, Raphael Nadal, who played in the French Open last week, earlier this week, this weekend, I guess, are fierce competitors, and they've been going at it, these two have been battling each other as numbers one and two in the rankings for a very, very long time.

28
00:02:27.320 --> 00:02:36.320
We might talk about Ford and General Motors or Toyota and Honda as competing fiercely in the markets for automobiles, right?

29
00:02:36.320 --> 00:02:42.320
So we have a sense of some very active and dynamic and rivalrous behavior.

30
00:02:42.320 --> 00:02:51.320
You also might think of sort of illegal or political economy notion of competition, meaning simply freedom.

31
00:02:51.320 --> 00:03:01.320
that competition exists when people are free to compete with each other, free to try to compete with each other, right?

32
00:03:01.320 --> 00:03:13.320
So there's American Idol is holding a competition to determine the best performers and anyone can try out and get smashed by Simon and all the rest of it, right?

33
00:03:13.320 --> 00:03:21.320
Right, but there's no law that says that Italian Americans from New Jersey can't compete in American Idol, although maybe there should be.

34
00:03:21.320 --> 00:03:25.320
So Joseph Salerno could give it a shot if he wanted to.

35
00:03:25.320 --> 00:03:33.320
There's no law that says I can't try to write computer programs if I want to and offer them for sale.

36
00:03:33.320 --> 00:03:40.320
Okay, we'll get into some subtleties of forms of legal barriers such as patent intellectual property and so on.

37
00:03:40.320 --> 00:03:47.320
and so on. Right? But we might think of a situation being competitive as one in which anybody who wants to can try, can give it a shot.

38
00:03:47.320 --> 00:03:55.320
Okay? It's not competitive if there are rules or restrictions on who may enter or who may not enter.

39
00:03:55.320 --> 00:04:04.320
Right? Now, of course, it's not saying that defining competition as freedom to compete does not mean freedom to be successful in competition, of course.

40
00:04:04.320 --> 00:04:25.320
There's no law that says I can't try to be an opera singer, but if you've ever heard me sing, you know that I'm very unlikely to be successful in the market for opera, operatic performances because of rampant discrimination against people with dark hair. It's completely unfair.

41
00:04:25.320 --> 00:04:36.320
Consumers decide, right? Consumers decide which producers they wish to patronize and thus which producers are successful in the marketplace.

42
00:04:36.320 --> 00:04:44.320
So complaining that no one wanted to buy your product does not constitute a legitimate complaint about a lack of competition.

43
00:04:44.320 --> 00:04:54.920
Well, if competition is simply the freedom to compete in the marketplace, what is monopoly, the absence of such competition?

44
00:04:54.920 --> 00:05:06.920
Well, historically, the common law notion of monopoly is simply an artificial grant of privilege by the monarch, by the state.

45
00:05:06.920 --> 00:05:31.920
Okay, so Monopoly typically referred to the British East India Company. So the British Crown said only this particular organization, the East India Tea Company, may legally export tea from the Far East to the British Isles. If anyone else tries to do so, they would be illegal, they would be fined or imprisoned.

46
00:05:31.920 --> 00:06:01.920
Okay, the cable company here in Auburn is Charter Communications, been helping Professor Salerno set up his new high definition television and he had to go and exchange his cable receiver box with some difficulty and as you know if you've ever dealt with the cable company in your town or a regulated public utility, you know they do not typically excel in customer service

47
00:06:01.920 --> 00:06:15.920
Right? So it isn't the case that Charter Communications won a process of rivalrous competition for Joseph Salerno's cable dollars, TV dollars here in Auburn, rather the city of Auburn has granted Charter a monopoly.

48
00:06:15.920 --> 00:06:23.920
They're the only firm that can legally provide wired cable service in the city, so they have a monopoly because the state gave it to them.

49
00:06:23.920 --> 00:06:26.920
That's conventionally what has been meant by monopoly.

50
00:06:26.920 --> 00:06:47.920
Now in the 20th century, as we'll see in just a moment, the term monopoly, the concept of monopoly has been transformed from meaning an exclusive privilege granted by the state to any situation in which one firm or a small set of firms is large in the market.

51
00:06:47.920 --> 00:06:57.920
So, monopoly has come to mean, in contemporary economic discourse, any seller who has a large share of the market.

52
00:06:57.920 --> 00:07:07.920
So, Walmart has monopoly power, it is said. Now, there is no law that restricts me from trying to offer discount goods and services.

53
00:07:07.920 --> 00:07:15.920
Walmart doesn't have a legal monopoly privilege, but many people say, well, it's big and it can charge whatever prices it wants

54
00:07:15.920 --> 00:07:23.920
It's a completely different notion of monopoly.

55
00:07:23.920 --> 00:07:29.920
We'll get into this notion just a bit later.

56
00:07:29.920 --> 00:07:43.920
Mainstream economic discourse today is dominated by attention to particular imaginary constructs or imaginary constructs, hypothetical constructs related to market characteristics.

57
00:07:43.920 --> 00:07:53.920
In particular, the model of so-called perfect competition, as opposed to models of non-perfect or imperfect competition, such as monopoly.

58
00:07:53.920 --> 00:08:04.920
I want to spend a little bit of time this afternoon talking about the model of perfect competition, the other models of imperfect competition, including monopoly,

59
00:08:04.920 --> 00:08:08.920
and explain some of the problems with those models.

60
00:08:08.920 --> 00:08:16.760
Remember that in causal, realist analysis, we do not oppose the use of imaginary constructions per se.

61
00:08:16.760 --> 00:08:22.200
Indeed, some imaginary constructions are vital for understanding key parts of the real economy.

62
00:08:22.200 --> 00:08:32.920
The so-called evenly rotating economy, for instance, is a vital mental tool for allowing us to understand conceptually the distinction between profit and interest.

63
00:08:32.920 --> 00:08:41.880
However, these particular imaginary constructions are not only not useful but completely misleading

64
00:08:41.880 --> 00:08:50.440
and harmful in setting up a hypothetical state of affairs that does not illuminate any aspects

65
00:08:50.440 --> 00:08:59.000
of actual market transactions. In fact, it misleads us and deceives us as to how market

66
00:08:59.000 --> 00:09:12.680
Well, let's start out with a very simple notion of, call it monopoly pricing, quote-unquote.

67
00:09:12.680 --> 00:09:17.300
In other words, how do the prices of goods and services that are exchanged in real markets

68
00:09:17.300 --> 00:09:21.520
differ depending on various characteristics of those markets?

69
00:09:21.520 --> 00:09:28.960
For example, suppose for some reason, we won't say what the reason is, there's only one seller

70
00:09:28.960 --> 00:09:30.920
in a particular market.

71
00:09:30.920 --> 00:09:32.000
Remember when I was talking the other day

72
00:09:32.000 --> 00:09:33.040
about the car radios?

73
00:09:33.040 --> 00:09:36.360
Suppose there's only one car radio in existence

74
00:09:36.360 --> 00:09:39.420
that I could possibly use to replace my broken one,

75
00:09:39.420 --> 00:09:42.380
and maybe there are other people who also seek car radios

76
00:09:42.380 --> 00:09:44.040
to replace their broken ones.

77
00:09:44.040 --> 00:09:45.720
So for whatever reason,

78
00:09:45.720 --> 00:09:47.440
I suppose there's only one seller.

79
00:09:47.440 --> 00:09:50.960
How does that affect the equilibrium price and quantity

80
00:09:50.960 --> 00:09:53.240
as opposed to a condition where there are many sellers,

81
00:09:53.240 --> 00:09:55.820
sellers with different characteristics, okay?

82
00:09:55.820 --> 00:10:02.700
Well, Carl Menger devotes some attention in his 1871 book, Principles of Economics, to

83
00:10:02.700 --> 00:10:09.620
this very kind of question. And it turns out that Menger and his followers in the early

84
00:10:09.620 --> 00:10:18.180
generations of the Austrian School, also in the UK and in the US, in the late 19th and

85
00:10:18.180 --> 00:10:25.180
early 20th centuries, developed a pretty coherent account of how equilibrium prices and quantity

86
00:10:25.820 --> 00:10:30.820
in the 1930s vary with market conditions.

87
00:10:30.820 --> 00:10:35.140
Unfortunately what happened is there were two extremely important books published in

88
00:10:35.140 --> 00:10:45.220
the 1930s by John Chamberlain and, not John, William Henry, William Henry, I've forgotten

89
00:10:45.220 --> 00:10:51.580
which Chamberlain, by Mr. Chamberlain, Professor Chamberlain, and Joan Robinson, I do remember

90
00:10:51.580 --> 00:11:11.580
Edward Chamberlain published books on the theory of competition in the 1930s and they advocated a radically new approach which has been described as the imperfect competition or monopolistic competition approach.

91
00:11:11.580 --> 00:11:29.580
People sometimes speak of the imperfect competition revolution, the monopolistic competition revolution brought about by their thinking, which has for the most part, though not exclusively, come to be incorporated in sort of the 20th century mainstream neoclassical consensus.

92
00:11:29.580 --> 00:11:35.580
And so the theory of Menger and his followers was completely forgotten.

93
00:11:35.580 --> 00:11:48.580
This theory was revived in Mises' book Human Action in 1949 and revived and further developed by Rothbard in Man Economy and State in 1962.

94
00:11:48.580 --> 00:11:59.580
Rothbard took a slightly different approach, placing particular emphasis on the role of legal restrictions in the determinants of market structure.

95
00:11:59.580 --> 00:12:08.080
But even among contemporary Austrian economists, this Mungarian tradition has not received as much attention as perhaps it should.

96
00:12:08.080 --> 00:12:13.580
So let's go back to the very beginning, go back to the simple kinds of pricing examples that we studied the other day,

97
00:12:13.580 --> 00:12:18.580
because it turns out we've already looked at some examples of so-called monopoly pricing.

98
00:12:18.580 --> 00:12:22.580
Here's one of the examples from the other day.

99
00:12:22.580 --> 00:12:52.580
Excuse me. Where there's one seller possessing one unit of the good or service in question, this is my car radio example, and assume that the seller has a minimum selling price of $150. He would not sell that good for anything less than $150. Suppose there are five buyers, each of whom has a maximum buying price or reservation price as given in this demand schedule. Well, we said the other day that the good or service

100
00:12:52.580 --> 00:13:08.580
The good will end up going to the most capable buyer, or the buyer with the highest reservation price, highest willingness to pay, at a price below his reservation price, but above that of the next most capable buyer.

101
00:13:08.580 --> 00:13:13.580
Assuming that those prices are above the seller's reservation price.

102
00:13:13.580 --> 00:13:20.580
We know trade cannot take place at a price below 150, because then the seller would rather hold on to it.

103
00:13:20.580 --> 00:13:27.580
The trade can't take place at a price below $275 because then you'd have two buyers bidding against each other.

104
00:13:27.580 --> 00:13:35.580
So the B1 will bid the price up above B2's reservation price so that B2 will drop out of the market.

105
00:13:35.580 --> 00:13:42.580
Equilibrium price will be somewhere between B1's maximum of $300 and B2's maximum of $275.

106
00:13:42.580 --> 00:13:48.580
This is exactly the same copy and paste job from the other day.

107
00:13:48.580 --> 00:13:52.180
Let's try a few slightly different variations.

108
00:13:52.180 --> 00:13:54.660
Suppose you have one seller

109
00:13:54.660 --> 00:13:57.780
who possesses multiple units of the good,

110
00:13:57.780 --> 00:14:01.260
all valued at the same price for the seller.

111
00:14:01.260 --> 00:14:03.940
So the seller has three radios,

112
00:14:03.940 --> 00:14:09.460
each of which he would be willing to sell for a hundred fifty bucks a pop.

113
00:14:09.460 --> 00:14:11.020
What would happen here? Well,

114
00:14:11.020 --> 00:14:14.820
because there are three buyers,

115
00:14:14.820 --> 00:14:18.780
potential buyers, all of whom are willing to pay more than 150.

116
00:14:18.780 --> 00:14:23.380
Right, so B1, B2, and B3 can all get a radio.

117
00:14:23.380 --> 00:14:30.720
Okay, they can all get a radio, and the price, the equilibrium price, again, must lie,

118
00:14:30.720 --> 00:14:33.720
it can't be above 250,

119
00:14:33.720 --> 00:14:36.740
okay, because then B3 would drop out.

120
00:14:36.740 --> 00:14:41.780
Right, it can't be below 225, otherwise B4 would want to come in,

121
00:14:41.780 --> 00:14:45.000
and the other three buyers would have to bid it away from before.

122
00:14:45.000 --> 00:14:51.160
Okay, so the equilibrium price will be somewhere between $250 and $225, okay?

123
00:14:51.160 --> 00:14:55.920
Well, so we've already seen now that we still have only one seller in the market.

124
00:14:55.920 --> 00:14:58.680
We still have a monopoly seller, quote-unquote.

125
00:14:58.680 --> 00:15:05.320
But now the monopoly seller has three units available for sale rather than two, okay?

126
00:15:05.320 --> 00:15:11.080
And because the seller wishes, would like to unload all three units as possible,

127
00:15:11.080 --> 00:15:20.080
competition among buyers, the price will be lower than it would if there were only one unit for sale.

128
00:15:20.080 --> 00:15:30.680
Because the seller has to attract more than just B1, he has to be able to make a deal with B2 and B3 as well.

129
00:15:30.680 --> 00:15:38.780
Another case, suppose you have five sellers, all of whom have the same reservation price, 150 bucks.

130
00:15:38.780 --> 00:15:52.780
What happens here? Well, because the least capable buyer, B5, is willing to pay more than the reservation price of these sellers, 150, all five units of the good can be exchanged.

131
00:15:52.780 --> 00:16:02.780
So we have five sellers, each of whom has one unit. All five units can be transacted, so all five buyers will be satisfied, will end up purchasing a unit of the good.

132
00:16:02.780 --> 00:16:17.780
The equilibrium price will lie somewhere between the least capable buyers' willingness to buy $200 and this reservation price of the sellers $150.

133
00:16:17.780 --> 00:16:20.780
How about this case?

134
00:16:20.780 --> 00:16:24.780
Again, assume we have five units of the good.

135
00:16:24.780 --> 00:16:29.780
We have five sellers, each of whom has a single unit available for sale.

136
00:16:29.780 --> 00:16:33.780
But they have very high reservation prices, say $240.

137
00:16:33.780 --> 00:16:38.780
What's going to happen here? Well, you can see by looking at the buyer's willingness to pay

138
00:16:38.780 --> 00:16:42.780
that not all five units can be purchased.

139
00:16:42.780 --> 00:16:49.780
Because neither B4 nor B5 is willing to pay a price high enough to attract a unit away

140
00:16:49.780 --> 00:16:54.780
to induce one of these sellers to give up a unit of the good.

141
00:16:54.780 --> 00:16:59.780
Okay, so what happens in this case? Well, only three transactions will take place.

142
00:16:59.780 --> 00:17:04.780
Right? So the first three, the three most capable buyers will end up with a radio.

143
00:17:04.780 --> 00:17:11.780
The two least capable buyers will not. And the equilibrium price will lie somewhere below

144
00:17:11.780 --> 00:17:19.780
the last of the capable buyers' reservation price, 250, and the reservation price of the sellers, 240.

145
00:17:19.780 --> 00:17:30.780
So the price can't go below $2.40 here, even though B4's valuation is only $2.25, the price can't go below $2.40, otherwise the sellers will drop out.

146
00:17:30.780 --> 00:17:44.780
What if you have multiple sellers, each of whom has a good or service for sale, but they have different reservation prices?

147
00:17:44.780 --> 00:17:48.500
Reservation Prices.

148
00:17:48.500 --> 00:17:53.340
Now we're back to the analysis of the marginal pairs that we studied two days ago.

149
00:17:53.340 --> 00:17:57.940
So this is the same example that we looked at originally.

150
00:17:57.940 --> 00:18:04.240
We have bilateral competition, competition among buyers, competition among sellers.

151
00:18:04.240 --> 00:18:09.240
So this is the case that we looked at before where there will be four transactions and

152
00:18:09.240 --> 00:18:16.920
The equilibrium price lies below the reservation price of the first excluded buyer, B5, and

153
00:18:16.920 --> 00:18:24.440
above the reservation price of the first excluded buyer, B5, and below the reservation price

154
00:18:24.440 --> 00:18:29.640
of the first excluded seller, S5.

155
00:18:29.640 --> 00:18:31.800
What's the moral of the story here?

156
00:18:31.800 --> 00:18:33.520
What's the point of these examples?

157
00:18:33.520 --> 00:18:40.040
Well, that equilibrium prices and quantities do depend on characteristics of the buyers

158
00:18:40.040 --> 00:18:42.440
and sellers in the markets, no doubt about it.

159
00:18:42.440 --> 00:18:49.300
But it's not simply the numbers of buyers and sellers that matter, it's not the numbers

160
00:18:49.300 --> 00:18:54.760
of buyers and sellers in the market that affect these equilibrium prices and quantities, it's

161
00:18:54.760 --> 00:19:01.040
the entire schedule of valuations on both the buyer and seller sides, it's the reservation

162
00:19:01.040 --> 00:19:04.800
Reservation Prices of the Buyers and the Sellers that Matter.

163
00:19:04.800 --> 00:19:09.880
We've looked at a set of examples here where we kept the buyer's reservation prices the

164
00:19:09.880 --> 00:19:18.040
same and we varied the number of sellers and the levels of reservation prices and the variation

165
00:19:18.040 --> 00:19:21.240
in reservation prices among sellers.

166
00:19:21.240 --> 00:19:28.520
We saw, for example, that if all sellers have the same reservation price and that's below

167
00:19:28.520 --> 00:19:34.480
below at least some buyer's reservation prices, then equilibrium prices are decreasing in

168
00:19:34.480 --> 00:19:38.480
the number of sellers, other things equal, holding constant the characteristics of the

169
00:19:38.480 --> 00:19:40.200
demand side and so on.

170
00:19:40.200 --> 00:19:46.640
But notice, you could flip that around and do a completely symmetric analysis, what economists

171
00:19:46.640 --> 00:19:54.360
sometimes call monopsony rather than monopoly, meaning a reduced competition among buyers.

172
00:19:54.360 --> 00:20:12.360
So if you had a single buyer but a lot of sellers, right, so if we assume that all these buyers have the same reservation prices, and those are above the reservation prices of at least some sellers, then equilibrium prices are increasing in the number of buyers of the things equal.

173
00:20:12.360 --> 00:20:23.360
So it isn't the case that having fewer participants in the market necessarily means that prices will be higher.

174
00:20:23.360 --> 00:20:27.360
Having fewer participants in the market could make prices lower.

175
00:20:27.360 --> 00:20:33.360
It depends on whether we're talking about variations in the supply side or on the demand side.

176
00:20:33.360 --> 00:20:46.360
Okay, the more general point is that we cannot simply count, we can't do a head count and say, well, gosh, having five firms in the market is better than having four firms in the market.

177
00:20:46.360 --> 00:20:50.360
And having six firms in the market is better than having five firms in the market.

178
00:20:50.360 --> 00:20:57.360
Okay, it's a much more complicated story depending on the characteristics of buyers and sellers' subjective valuations.

179
00:20:57.360 --> 00:21:13.360
And it's interesting that a lot of antitrust policy is based on incredibly simple, naively simple models in which you have large numbers of perfectly identical sellers or numbers of perfectly identical buyers and so on.

180
00:21:13.360 --> 00:21:32.360
Also note that there's nothing in this analysis that suggests any, we haven't given any basis for some kind of normative evaluation of those different cases that I put up, different examples, right?

181
00:21:32.360 --> 00:21:36.360
Well, they're ones in which buyers and sellers have different subjective valuations.

182
00:21:36.360 --> 00:21:41.360
Is one of those cases better than another case?

183
00:21:41.360 --> 00:21:45.360
Is social welfare higher in one of those cases than in another case?

184
00:21:45.360 --> 00:21:49.360
Well, we have no scientific basis for saying so.

185
00:21:49.360 --> 00:21:54.360
Remember, as we discussed before, all that we can say in cases like these

186
00:21:54.360 --> 00:21:59.360
is that as long as buyers and sellers are free to transact voluntarily

187
00:21:59.360 --> 00:22:04.360
and no transactions are coerced, meaning someone is forced to buy something

188
00:22:04.360 --> 00:22:19.360
If you buy something at a price higher than his reservation price or someone is forced to sell something at a price lower than his reservation price, then any arrangement of transactions is welfare maximizing in the only scientifically meaningful sense of welfare maximization.

189
00:22:19.360 --> 00:22:31.360
Because we don't have any grounds whatsoever for some sort of competition policy or antitrust policy based on the analysis that we've just walked through, and that's very important.

190
00:22:31.360 --> 00:22:34.440
What about so-called perfect competition?

191
00:22:36.800 --> 00:22:40.360
Are any of the examples that I've just gone through

192
00:22:40.360 --> 00:22:42.400
examples of perfect competition?

193
00:22:42.400 --> 00:22:44.520
If not, what's imperfect about them?

194
00:22:45.400 --> 00:22:48.400
Does it matter what should be done about it?

195
00:22:48.400 --> 00:22:51.080
Well, as I said before, the model of so-called

196
00:22:51.080 --> 00:22:54.120
perfect competition, like the other models,

197
00:22:54.120 --> 00:22:57.040
like the contrasting models of imperfect competition,

198
00:22:57.040 --> 00:23:00.080
are imaginary constructs or constructions,

199
00:23:00.080 --> 00:23:05.680
But they're not particularly useful ones, they're bad ones, it turns out, okay?

200
00:23:05.680 --> 00:23:08.680
Well, what are in these imaginary constructions?

201
00:23:08.680 --> 00:23:14.680
Well, the kind of standard textbook approach to market structure

202
00:23:14.680 --> 00:23:23.480
is to say, well, you can take any hypothetical market and characterize it according to four dimensions, okay?

203
00:23:23.480 --> 00:23:27.280
First would be characteristics of the product.

204
00:23:27.280 --> 00:23:32.520
Are the products offered by different sellers perfect substitutes?

205
00:23:32.520 --> 00:23:37.520
Each seller is selling a product that's identical to that of every other seller.

206
00:23:37.520 --> 00:23:40.400
Or are the products slightly different?

207
00:23:40.400 --> 00:23:44.840
Or does a seller have a completely unique product?

208
00:23:44.840 --> 00:23:50.480
Okay, so sacks of wheat are more or less homogeneous.

209
00:23:50.480 --> 00:23:54.840
So you could say, well, the wheat market is one in which you have lots of sellers selling wheat

210
00:23:54.840 --> 00:24:01.640
and buyers don't distinguish between Farmer Jones' wheat and Farmer Smith's wheat. It's just all wheat.

211
00:24:01.640 --> 00:24:05.760
Of course, that isn't technically true because there are lots of different grades and categories of wheat.

212
00:24:05.760 --> 00:24:09.000
That's even less so today because you have

213
00:24:09.000 --> 00:24:13.640
genetically modified wheat and non-genetically modified wheat. So there actually is a lot of variety.

214
00:24:13.640 --> 00:24:16.400
But assume that there is some category of wheat

215
00:24:16.400 --> 00:24:19.320
within which all products are homogeneous.

216
00:24:19.320 --> 00:24:25.320
You can imagine a market for slightly differentiated products like soft drinks.

217
00:24:25.320 --> 00:24:32.320
Coke and Pepsi aren't identical, but to most people they're pretty similar.

218
00:24:32.320 --> 00:24:38.320
I just gave you a hint as to something that makes this kind of analysis very tricky.

219
00:24:38.320 --> 00:24:44.320
In the southern United States, particularly in Georgia where I used to live,

220
00:24:44.320 --> 00:24:48.320
we have very, very strong opinions about Coke and Pepsi.

221
00:24:48.320 --> 00:25:01.320
Let's say Pepsi is not even remotely a close substitute for Coke, whereas there are people in other parts of the world who would think Coke and Pepsi are pretty much the same, and if you don't drink soft drinks at all, you would have no reason to differentiate among them.

222
00:25:01.320 --> 00:25:25.320
What that tells us right away is that, I'm planting a little seed that we'll nourish a little bit later, is that it's not the objective characteristics of the product, some kind of scientific or technical attributes that make a pair of products substitutes or complements or homogenous or differentiated, right?

223
00:25:25.320 --> 00:25:35.320
So whether a product is homogeneous or not depends on how it's perceived by consumers, not the chemical composition of the product.

224
00:25:35.320 --> 00:25:40.320
You can also think of a market in which there's a completely unique product.

225
00:25:40.320 --> 00:25:50.320
The iPhone, if you guys are planning to get the new iPhone from Apple, it looks extremely cool.

226
00:25:50.320 --> 00:26:04.320
I mean, it's a phone, right? But to some people, it's a completely unique phone. I mean, it can do all those. Have you seen the ads, all the different things it can do? It's extremely cool. If anyone listening out there would like to send me one.

227
00:26:04.320 --> 00:26:15.320
But some people say, oh, that's a unique product. So Apple has a monopoly on the iPhone. No one else makes the iPhone. Well, I mean, there's a sense in which that's true, right? Okay.

228
00:26:15.320 --> 00:26:19.600
Okay, but so already we've seen, there's not really a scientific distinction here.

229
00:26:19.600 --> 00:26:27.600
Also notice that when we studied pricing and exchange before, right, we defined a market,

230
00:26:27.600 --> 00:26:34.520
we defined a market as being one in which goods and services, units of goods and services

231
00:26:34.520 --> 00:26:43.520
that are perceived as perfect substitutes are being exchanged, right?

232
00:26:43.520 --> 00:26:48.000
Okay, so the market for sacks of wheat or for bottles of water or for car radios.

233
00:26:48.000 --> 00:26:56.520
We're assuming that consumers, that B1 doesn't care if he gets S1's radio or S2's radio or S3's radio, he just wants a radio.

234
00:26:56.520 --> 00:27:05.240
Okay, if he thinks that S1's radio is different from S2's radio, well then S1 and S2 are not selling in the same market.

235
00:27:05.240 --> 00:27:12.800
It doesn't make sense to talk about an equilibrium price in that market because the market, there's no unified market, okay.

236
00:27:12.800 --> 00:27:18.600
So a market is defined as one in which homogeneous units of good and service are being exchanged

237
00:27:18.600 --> 00:27:21.720
in the analysis that we presented in the last few days.

238
00:27:21.720 --> 00:27:26.960
Okay, but in the standard sort of textbook analysis, you can have a market with slightly

239
00:27:26.960 --> 00:27:30.800
differentiated products.

240
00:27:30.800 --> 00:27:34.680
How many buyers and sellers in the market and how big are they?

241
00:27:34.680 --> 00:27:40.000
Are there lots of buyers and sellers?

242
00:27:40.000 --> 00:27:53.000
The model of perfect competition requires that products being exchanged are perceived as homogeneous, and there's not only a lot of buyers and sellers, there's really a lot of buyers and sellers.

243
00:27:53.000 --> 00:28:03.000
There's an infinite number of buyers and sellers. Infinity. Literally an infinite number of buyers and sellers.

244
00:28:03.000 --> 00:28:10.000
Technically speaking, the model says what happens to price and quantity as the number of buyers and sellers approaches infinity.

245
00:28:10.000 --> 00:28:14.000
It's a calculus notion of what happens in the limit.

246
00:28:14.000 --> 00:28:20.000
But so for a market to be perfectly competitive, there would have to be an infinite number of buyers and sellers.

247
00:28:20.000 --> 00:28:26.000
I haven't seen many of those around here. Maybe you have.

248
00:28:26.000 --> 00:28:31.000
Conditions on entry and exit.

249
00:28:31.000 --> 00:28:38.000
So, is this a market in which anyone can freely enter and exit, or are there barriers to entry?

250
00:28:38.000 --> 00:28:45.000
Now, in this kind of textbook analysis, what's meant by a barrier to entry is not necessarily a law.

251
00:28:45.000 --> 00:28:50.000
A law saying you can't be in this market, that could constitute a barrier to entry.

252
00:28:50.000 --> 00:28:58.000
But anything that limits you from sort of magically, instantaneously being in the market is considered a barrier.

253
00:28:58.000 --> 00:29:19.000
Right? So, I mean, it is objectively true that while there's no legal reason that I couldn't set up a discount store today to compete with Wal-Mart, I'm practically constrained because I do not at present have the capital resources necessary to purchase a huge storefront.

254
00:29:19.000 --> 00:29:24.000
I could try to borrow the money but I actually can't get to the bank before it closes today

255
00:29:24.000 --> 00:29:29.000
because I have to lecture here until 3.30 and the bank closes at 4 and I don't even have a bank account

256
00:29:29.000 --> 00:29:34.000
with a bank in this state.

257
00:29:34.000 --> 00:29:39.000
In the sort of mainstream approach, that would constitute an entry barrier.

258
00:29:39.000 --> 00:29:45.000
I can't compete with Walmart because I don't literally have the funds in my pocket right now to set up a store.

259
00:29:45.000 --> 00:29:50.000
or Walmart has a brand advantage.

260
00:29:50.000 --> 00:29:53.000
People already know the name Walmart.

261
00:29:53.000 --> 00:29:58.000
When you buy something from Walmart, you assume that it is going to be of reasonable quality

262
00:29:58.000 --> 00:30:06.000
because if they sold you faulty products or food products that were filled with poison or whatever,

263
00:30:06.000 --> 00:30:09.000
people wouldn't want to shop at Walmart again.

264
00:30:09.000 --> 00:30:13.000
That would hurt Walmart's long-run profitability.

265
00:30:13.000 --> 00:30:34.000
So established sellers who have a brand, consumers have some confidence in that brand. Well, nobody knows what Peter's discount store sells. I haven't established a reputation with consumers. They might be reluctant to buy my products. So I can't compete with Walmart, the argument goes. They have a brand name advantage that I don't have.

266
00:30:34.000 --> 00:30:47.000
Notice we're getting away from the realm of legal restrictions and into one in which anything that prevents me from doing sort of whatever I want to do constitutes a barrier to entry.

267
00:30:47.000 --> 00:30:51.000
It's a little bit fanciful, right?

268
00:30:51.000 --> 00:30:58.000
There's also conditions on information. The perfectly competitive model assumes that everyone has perfect information.

269
00:30:58.000 --> 00:31:02.000
I know exactly who all the other market participants are, where they are.

270
00:31:02.000 --> 00:31:07.000
I know all the relevant characteristics of the good or service in question and so on, perfect information.

271
00:31:07.000 --> 00:31:15.000
In the textbooks, you typically find four different market structures described.

272
00:31:15.000 --> 00:31:27.000
Perfect competition, monopolistic competition, described by these English economists in the 1930s, we mentioned before, oligopoly and perfect monopoly or pure monopoly.

273
00:31:27.000 --> 00:31:48.000
Ironically, while the imperfect competition theories, the monopolistic competition theories of the 1930s were the ones that sort of led to the demise of the Mengerian approach, the imperfect competition or monopolistic competition models now are almost themselves forgotten.

274
00:31:48.000 --> 00:31:55.000
So most of the textbooks have dropped the section on monopolistic competition, which was there when I was an undergraduate.

275
00:31:55.000 --> 00:32:12.000
And now they just discussed perfect competition, oligopoly and monopoly, and oligopoly has become a much more popular model because they're typically analyzed using concepts from game theory, which is a very trendy and fashionable approach to mathematical economic analysis, okay?

276
00:32:12.000 --> 00:32:21.000
So a market is perfectly competitive if it satisfies particular requirements on these four conditions.

277
00:32:21.000 --> 00:32:29.000
Homogeneous product, infinite numbers of buyers and sellers, free entry and exit, in the sense that we just discussed, and perfect information.

278
00:32:29.000 --> 00:32:37.000
If any of those is lacking, the market is not perfectly competitive, and it's one of these three alternatives.

279
00:32:37.000 --> 00:32:46.000
What does the firm do in this hypothetical perfectly competitive market?

280
00:32:46.000 --> 00:32:49.000
What's the situation facing the firm?

281
00:32:49.000 --> 00:32:57.000
Well, assume that the firm seeks to maximize its money profit,

282
00:32:57.000 --> 00:33:02.000
where profit is defined as the difference between total revenues and total costs.

283
00:33:02.000 --> 00:33:32.000
So the firm, if the firm faces a marginal cost curve that is upward sloping, in other words if the cost of producing an additional unit of output by increasing one or more variable factors is increasing in the quantity of output, okay, and that itself can be derived from the principle of diminishing returns, which we discussed the other day, right, to produce

284
00:33:32.000 --> 00:33:45.000
Remember, if I add, I have my flower pot with the corn, right, if I add, each time I add an ounce of fertilizer, I don't get a proportional increase, a consistent and even increase in corn.

285
00:33:45.000 --> 00:33:54.000
So if I want to get 10% more corn and then another 10% more corn, then another 10% more corn, right, I have to add more than just 10% more fertilizer.

286
00:33:54.000 --> 00:34:06.000
I've got to add 20% and then 30% and then 40%, so I have to continually increase the degree to which I add my variable factors to get a constant increase in output.

287
00:34:06.000 --> 00:34:16.000
So to produce additional units of output, the marginal cost is increasing, the cost of producing a marginal unit rises as I produce more and more.

288
00:34:16.000 --> 00:34:35.000
Okay, what's supposed to be, what's unique about the perfectly competitive firm is that it is alleged to face a demand curve that is completely flat or in the language that Joe used on Monday, I think it was, or Tuesday, perfectly elastic.

289
00:34:35.000 --> 00:34:41.000
Okay, so it's assumed that the perfectly competitive firm faces a perfectly elastic demand curve.

290
00:34:41.000 --> 00:35:11.000
demand curve. What's a perfectly elastic demand curve? Well, it's one in which for any quantity that the firm wishes to sell, it can sell as many units as it wants at the prevailing price, PPC for perfect competition, without ever driving the price down. In other words, the wheat farmer can bring as many bushels of wheat to market as he wants, and he can sell everyone without ever having to

291
00:35:11.000 --> 00:35:19.000
lower the price below the prevailing market price PC, PPC.

292
00:35:19.000 --> 00:35:22.320
Now, how is that even conceptually possible?

293
00:35:22.320 --> 00:35:25.280
Well, in the story, in the standard story,

294
00:35:25.280 --> 00:35:29.600
remember this perfectly competitive firm,

295
00:35:29.600 --> 00:35:35.280
despite having actual finite costs

296
00:35:35.280 --> 00:35:40.120
and producing an actual specific quantity,

297
00:35:40.120 --> 00:35:42.760
Remember how big this guy is?

298
00:35:44.660 --> 00:35:46.600
How many of these sellers are there?

299
00:35:46.600 --> 00:35:47.440
Many, many.

300
00:35:47.440 --> 00:35:48.900
Yeah, infinity.

301
00:35:48.900 --> 00:35:50.940
So each one is how small?

302
00:35:50.940 --> 00:35:53.200
Each one is infinitely small

303
00:35:53.200 --> 00:35:55.880
relative to the total amount produced.

304
00:35:55.880 --> 00:35:58.680
Okay, so the theory is this guy is so teeny, teeny,

305
00:35:58.680 --> 00:36:01.400
teeny tiny, he's like in, you know,

306
00:36:01.400 --> 00:36:03.560
the Honey I Shrunk the Kids movies.

307
00:36:03.560 --> 00:36:05.560
So he's like this teeny tiny little farmer

308
00:36:05.560 --> 00:36:07.400
who's about this big, right?

309
00:36:07.400 --> 00:36:14.440
And he produces these teeny tiny little bushels of wheat, getting into some pretty fanciful

310
00:36:14.440 --> 00:36:20.640
territory here, and no matter how many he sells, he's so tiny that nobody even notices.

311
00:36:20.640 --> 00:36:26.320
Has literally zero effect on the market price, which is determined as sort of the big grown-up

312
00:36:26.320 --> 00:36:30.440
adult wheat market.

313
00:36:30.440 --> 00:36:33.080
So the theory is, well, what's this producer going to do?

314
00:36:33.080 --> 00:36:40.640
Well, he's going to expand his output, his quantity, up to the point where the revenue

315
00:36:40.640 --> 00:36:47.520
he receives from selling an additional unit of output is equal to what it costs him to

316
00:36:47.520 --> 00:36:49.960
produce an additional unit of output.

317
00:36:49.960 --> 00:36:54.880
So he maximizes his profits by choosing the quantity, producing the quantity at which

318
00:36:54.880 --> 00:36:58.920
marginal revenue is equal to marginal cost.

319
00:36:58.920 --> 00:37:05.500
But because his demand curve is perfectly elastic, the revenue he receives from selling

320
00:37:05.500 --> 00:37:11.320
one more unit, his marginal revenue, is always the same amount, it's a constant number, it's

321
00:37:11.320 --> 00:37:15.240
a constant, simply given by the market price.

322
00:37:15.240 --> 00:37:20.720
If wheat sells for $10 a bushel, then each additional bushel of wheat he brings to market

323
00:37:20.720 --> 00:37:27.000
adds $10 to his revenues.

324
00:37:27.000 --> 00:37:34.920
You might wonder as an aside, well, where does the price come from then?

325
00:37:34.920 --> 00:37:39.840
If every producer sort of takes the price as exogenously given, well, what determines

326
00:37:39.840 --> 00:37:40.840
the price then?

327
00:37:40.840 --> 00:37:46.940
Well, and the standard answer is, it's the interaction of all of these infinitely many

328
00:37:46.940 --> 00:37:50.040
infinitely small buyers and sellers that determines the price.

329
00:37:50.040 --> 00:37:55.640
So individually, each one is too small to affect the price, but collectively their actions

330
00:37:55.640 --> 00:38:24.640
It's a little bit paradoxical. In fact, it's quite like the paradox of voting. Why do people vote? Well, I mean, I can vote for the candidate of my choice, but I know that the probability that my vote will affect the outcome, not only in a national election, even in a state or local election, is effectively zero.

331
00:38:24.640 --> 00:38:37.640
Okay, certainly in a presidential election, right, with the tens of millions of votes that will be cast, the probability that the outcome will hinge on my vote is zero.

332
00:38:37.640 --> 00:38:45.640
Okay, indeed the probability that the outcome will be determined by any one person's vote is effectively zero.

333
00:38:45.640 --> 00:38:51.640
So if no one's vote affects the outcome, then what determines who wins?

334
00:38:51.640 --> 00:38:55.640
Well, it's all the votes.

335
00:38:55.640 --> 00:39:03.640
Right now, sensible people, when they think about this, come to the conclusion that there's no reason to vote.

336
00:39:03.640 --> 00:39:11.640
Okay, or it's perfectly legitimate for me to vote, but I'm doing so only because it makes me feel good.

337
00:39:11.640 --> 00:39:19.640
Okay, I get some subjective utility out of expressing my preference and wearing a little sticker or a button.

338
00:39:19.640 --> 00:39:33.640
It's a fun thing. I enjoy participating in the democratic process. It's perfectly fine, but if I think that my casting a vote is going to determine the winner, then I'm nuts.

339
00:39:33.640 --> 00:39:48.640
Ironically, what we have here in the perfectly competitive model is firms who know that their actions have no effect on the outcome, but yet continue to participate anyway.

340
00:39:48.640 --> 00:39:57.640
Okay, they're not producing because they get utility out of it, they're producing because they want to maximize their profits and so on.

341
00:39:57.640 --> 00:40:00.640
There's a lot of peculiarities about the model.

342
00:40:00.640 --> 00:40:06.640
Okay, now let's talk a little bit more about this concept of marginal revenue.

343
00:40:06.640 --> 00:40:14.640
Okay, marginal revenue is simply the addition to total revenue from producing one more unit of output.

344
00:40:14.640 --> 00:40:25.640
If the firm faces a perfectly elastic demand curve, in other words, a horizontal demand curve, marginal revenue is pretty easy to calculate.

345
00:40:25.640 --> 00:40:34.640
Because if the market price of wheat is $10 a bushel, each time I sell another bushel of wheat, I add $10 to my revenues.

346
00:40:34.640 --> 00:40:41.640
The situation is not so easy for a firm facing a downward sloping demand curve for its product.

347
00:40:41.640 --> 00:41:01.640
And there are a couple of different ways to think about this. When I teach this to my undergraduate students, I say, well, first, let's just make up some numbers and let's use a numerical example and just calculate the marginal revenue from selling various quantities of output and see what happens.

348
00:41:01.640 --> 00:41:20.640
So look, take the simplest demand curve you can imagine, just a straight line with a slope of one, so imagine that at a price of $10 a unit, the quantity demanded by consumers is one, at a price of $9 a unit, the quantity demanded by consumers is two, and so on.

349
00:41:20.640 --> 00:41:29.640
So we're plotting a line that even humanities majors could understand. I'm just kidding.

350
00:41:29.640 --> 00:41:41.640
So we'll just calculate, well, what's the total revenue received by the seller from producing either one unit, two units, three units, four units, and so on.

351
00:41:41.640 --> 00:41:47.640
If I produce one unit, I sell it for $10, so I have $10 of total revenue.

352
00:41:47.640 --> 00:41:54.640
If I produce two units, to sell two units, I have to lower the price to $9 each.

353
00:41:54.640 --> 00:42:04.640
So I get $18 of revenue. To sell three units, I can't charge any more than $8 each, so I get $24 and so on.

354
00:42:04.640 --> 00:42:11.640
So this gives me my sort of total revenue schedule, total revenue as a function of the quantity produced.

355
00:42:11.640 --> 00:42:19.640
What's marginal revenue? Well, it's simply the difference between the total revenue I receive producing N units

356
00:42:19.640 --> 00:42:24.640
and the total revenue I would receive from producing n minus one units.

357
00:42:24.640 --> 00:42:30.640
Well, or minus one, plus one or minus one, yeah.

358
00:42:30.640 --> 00:42:34.640
So, in other words, where do I get these numbers?

359
00:42:34.640 --> 00:42:36.640
Well, if I produce one, my total revenue is ten.

360
00:42:36.640 --> 00:42:40.640
If I produce two, my total revenue is eighteen.

361
00:42:40.640 --> 00:42:46.640
So, producing the second unit added eight dollars to my revenues.

362
00:42:46.640 --> 00:42:51.640
Producing the third unit added $6 to my revenue, 24 minus 18.

363
00:42:52.720 --> 00:42:55.640
Producing the fourth unit added $4 to my revenue,

364
00:42:55.640 --> 00:42:58.280
28 minus 24 and so on.

365
00:42:58.280 --> 00:43:01.880
Right, you see that the marginal revenue is not constant

366
00:43:02.880 --> 00:43:05.760
as it was for the perfectly competitive firm.

367
00:43:05.760 --> 00:43:08.240
Remember the farmer added $10 to his revenue

368
00:43:08.240 --> 00:43:10.600
each time he produced additional unit.

369
00:43:10.600 --> 00:43:13.760
This firm here, facing a downward slipping demand curve,

370
00:43:13.760 --> 00:43:18.760
is adding less to its revenue each time it produces a unit

371
00:43:19.720 --> 00:43:22.020
than it did when it produced the previous unit.

372
00:43:23.760 --> 00:43:27.640
So yeah, marginal revenue is still positive,

373
00:43:27.640 --> 00:43:31.800
greater than zero, at least up to the sixth unit.

374
00:43:31.800 --> 00:43:33.920
So my total revenue is growing

375
00:43:33.920 --> 00:43:36.460
as I increase my output from one to six,

376
00:43:36.460 --> 00:43:39.180
but it's growing at a smaller rate.

377
00:43:39.180 --> 00:43:46.180
It's increasing at a decreasing rate by a decreasing amount each time.

378
00:43:46.180 --> 00:43:55.180
In fact, I even get to a point where when I produce six units, I can charge $5 each for them, I get $30 of revenue.

379
00:43:55.180 --> 00:44:02.180
If I produce a seventh unit, I have to lower the price to $4 a unit, and I only earn $28 in revenue.

380
00:44:02.180 --> 00:44:08.180
My total revenue actually went down when I increased output from six to seven.

381
00:44:08.180 --> 00:44:14.660
7, lowering price from 5 to 4. Does anyone remember, what does that tell me about my

382
00:44:14.660 --> 00:44:25.660
demand curve beyond a quantity equal to 6? Economics majors, you can't answer. Right,

383
00:44:25.660 --> 00:44:31.780
Joe talked about the relationship between, he told us something about pricing and total

384
00:44:31.780 --> 00:44:46.940
Total Revenue, if I cut the price from 5 to 4, I increase my output from 6 to 7, but

385
00:44:46.940 --> 00:44:50.260
my total revenues go down.

386
00:44:50.260 --> 00:44:59.940
I'm selling more units, but I'm getting less for each one that I sell, and below $5 a unit

387
00:44:59.940 --> 00:45:13.940
or beyond six quantity equal to six, the amount I add to my, the effect from selling an extra unit is outweighed by the fact of getting less per unit, so I actually end up making less money in total, okay?

388
00:45:13.940 --> 00:45:23.940
So we know that beyond Q equals six, this demand curve is inelastic, okay? The demand schedule is inelastic, right?

389
00:45:23.940 --> 00:45:42.940
From quantity equal 1 to 6, however, demand is elastic. It's elastic. How do I know? Because as I increase output from 1 to 6, lowering price from 10 to 9, 9 to 8, 8 to 7, as I cut price, my total revenue increases.

390
00:45:42.940 --> 00:45:50.940
How can that be? I'm cutting my price. How can my revenue go up? Because when I cut my price, I sell more units.

391
00:45:50.940 --> 00:45:59.940
Right? And in the elastic part of the demand curve, the effect of selling more units outweighs the fact that I'm getting less per unit.

392
00:45:59.940 --> 00:46:09.940
In the inelastic region of the demand curve, the fact that I'm getting less per unit outweighs the fact that I'm selling more units and my total revenue falls.

393
00:46:09.940 --> 00:46:39.940
Okay? So, we took the simplest demand curve that we could think of, just a straight line with a slope of one, and you see that that demand curve has multiple regions, right? Part of it is elastic, to the left of Q equals six, it's elastic, to the right of Q equals six, it's inelastic, right? There's this sort of crossover point right in the middle where the textbooks, they call that the point of unit elasticity. Yeah, Matthew?

394
00:46:39.940 --> 00:47:09.940
I'm just trying to understand, like, the P stands for price, right? So what I'm confused about is, is this demand of marginal revenue, is it measuring production? And how we price what we produce? Or is it measuring retail relations? And how we price what people are buying? Because, for example, I'm thinking of this as a similar model to a used bookstore I've seen function where people put the date that the book came into the store in the front of the book, and each time three months pass, they cut the price of the book.

395
00:47:39.940 --> 00:47:44.940
Is this simply a model of exchange? Or does it include production and exchange?

396
00:47:44.940 --> 00:47:49.940
I don't think the distinction is relevant here.

397
00:47:49.940 --> 00:47:54.940
All we're saying is that consumer demands are such that

398
00:47:54.940 --> 00:48:00.940
if I wanted to sell five units, I cannot charge more than $6 per unit.

399
00:48:00.940 --> 00:48:06.940
This is not a single good, the price of which is lowered over time.

400
00:48:06.940 --> 00:48:20.940
I've estimated the demand curve to look like this demand curve. I believe that this is what the demand curve looks like.

401
00:48:20.940 --> 00:48:25.940
So I think that if I want to sell five units, I can't charge more than six dollars each.

402
00:48:25.940 --> 00:48:31.940
If I want to sell six units, I can't charge more than five dollars each. Otherwise, people won't buy them.

403
00:48:31.940 --> 00:48:36.420
If I only want to sell three units, I can charge as much as eight dollars apiece.

404
00:48:36.420 --> 00:48:42.900
Okay, so we haven't said anything about the entrepreneurs cost of production, if that's what you're asking.

405
00:48:42.900 --> 00:48:46.740
We're only talking about the revenue side here.

406
00:48:46.740 --> 00:48:50.380
Okay, so this is all sales.

407
00:48:50.380 --> 00:48:53.380
Revenues are just sales or sales receipts.

408
00:48:53.380 --> 00:49:00.020
So they're saying, you know, how much revenue am I going to have in my pocket if I try to sell this many, if I try to sell that many?

409
00:49:00.020 --> 00:49:02.820
We haven't said how much he has to pay for his factors of production.

410
00:49:02.820 --> 00:49:09.220
We're only looking at his receipts or his revenues, okay?

411
00:49:09.220 --> 00:49:13.220
Oh, so going back to our story, why is this relevant to our story?

412
00:49:13.220 --> 00:49:20.620
Well, go back to the previous analysis of the firm seeking to maximize its profits,

413
00:49:20.620 --> 00:49:26.020
but assume that it does not face a perfectly elastic demand curve for its product,

414
00:49:26.020 --> 00:49:29.220
but rather it faces a demand curve that looks something like this.

415
00:49:29.220 --> 00:49:33.580
it faces a downward sloping demand curve for its product.

416
00:49:33.580 --> 00:49:37.340
In other words, it cannot sell as many units as it wants

417
00:49:37.340 --> 00:49:39.660
without lowering the price.

418
00:49:39.660 --> 00:49:40.860
Okay, to sell more units,

419
00:49:40.860 --> 00:49:42.760
you have to lower the price per unit.

420
00:49:44.060 --> 00:49:46.660
Okay, we have a picture that looks something like this.

421
00:49:48.360 --> 00:49:50.800
Okay, once again, we've depicted

422
00:49:50.800 --> 00:49:53.960
an upward sloping marginal cost curve,

423
00:49:53.960 --> 00:49:55.640
but rather than a horizontal

424
00:49:55.640 --> 00:49:59.800
or perfectly elastic demand curve for the firm's product,

425
00:49:59.800 --> 00:50:02.620
we depicted a downward sloping demand curve.

426
00:50:02.620 --> 00:50:04.440
Okay, so this could be like the downward sloping

427
00:50:04.440 --> 00:50:06.820
demand curve from the previous slide.

428
00:50:06.820 --> 00:50:09.920
So if the seller wants to sell an additional unit of output,

429
00:50:09.920 --> 00:50:12.040
he has to lower the per unit price.

430
00:50:13.160 --> 00:50:16.640
Okay, and as we saw in the previous diagram,

431
00:50:16.640 --> 00:50:19.880
previous chart, if the demand curve is downward sloping,

432
00:50:19.880 --> 00:50:23.560
then the marginal revenue curve is also downward sloping

433
00:50:23.560 --> 00:50:27.000
and it's steeper than the demand curve, okay?

434
00:50:27.000 --> 00:50:29.840
The marginal revenue curve lies below the demand curve

435
00:50:29.840 --> 00:50:31.840
and it's steeper than the demand curve.

436
00:50:35.200 --> 00:50:36.520
Why is that?

437
00:50:36.520 --> 00:50:38.860
Again, I said when I introduce this in class,

438
00:50:38.860 --> 00:50:41.920
I ask people just to crank through the numbers like this,

439
00:50:41.920 --> 00:50:44.260
okay, and if you just plot that MR curve,

440
00:50:44.260 --> 00:50:47.040
it's gonna look something like the MR curve I've got there,

441
00:50:47.040 --> 00:50:51.080
right, it bisects the horizontal axis at Q equals six.

442
00:50:51.080 --> 00:50:53.360
So if you just crank through the numbers,

443
00:50:53.360 --> 00:51:00.120
and Plot Points, you realize, well, for that kind of a demand curve, the MR curve is gonna look something like that one.

444
00:51:00.120 --> 00:51:03.120
But sometimes it's hard for people to see intuitively, why is that?

445
00:51:03.120 --> 00:51:06.240
Why does the MR curve lie below the demand curve?

446
00:51:06.240 --> 00:51:08.320
And why is it steeper than the demand curve?

447
00:51:09.200 --> 00:51:12.060
Well, the easiest way to understand is the following.

448
00:51:13.200 --> 00:51:19.440
That remember the seller, we're talking about market clearing or equilibrium prices, right?

449
00:51:19.440 --> 00:51:25.640
So, in the market, the seller has to charge the same price to each buyer.

450
00:51:25.640 --> 00:51:31.840
Nobody would pay more than what some other buyer is paying to clear the market.

451
00:51:31.840 --> 00:51:37.840
Okay, so if I'm currently selling three units and charging $8 a piece for them,

452
00:51:37.840 --> 00:51:45.540
and then I produce a fourth unit at $7 a piece, I don't add $7 to my revenues.

453
00:51:45.540 --> 00:51:51.340
So why not? You're adding a fourth unit and it sells for seven dollars each.

454
00:51:51.340 --> 00:51:55.340
But remember, if I want to sell four units rather than three,

455
00:51:55.340 --> 00:51:58.540
I have to lower the price not only on that fourth unit,

456
00:51:58.540 --> 00:52:02.040
but on all the other units that came before.

457
00:52:02.040 --> 00:52:07.340
Okay? To sell one more unit, I have to lower the price on every unit.

458
00:52:07.340 --> 00:52:10.540
Which is why, as we move down the demand curve,

459
00:52:10.540 --> 00:52:14.540
where I'm selling in larger and larger quantities,

460
00:52:14.540 --> 00:52:19.140
To sell one more, I have to lower the price on these lots and lots of units that came before it,

461
00:52:19.140 --> 00:52:24.140
which is why eventually my total revenue begins to fall as I expand output.

462
00:52:24.140 --> 00:52:27.340
That's the inelastic part of the demand curve, okay?

463
00:52:27.340 --> 00:52:34.640
So that's why the marginal revenue curve lies below the demand curve and has a steeper slope, okay?

464
00:52:34.640 --> 00:52:35.740
What is this firm going to do?

465
00:52:35.740 --> 00:52:40.840
Well, once again, it wants to maximize its profits by producing up to the point

466
00:52:40.840 --> 00:52:45.340
Where Marginal Revenue is Equal to Marginal Cost, okay?

467
00:52:47.680 --> 00:52:51.920
However, so if I go to where the marginal cost curve

468
00:52:51.920 --> 00:52:53.560
and marginal revenue curves intersect,

469
00:52:53.560 --> 00:52:55.920
that gives me this quantity here.

470
00:52:55.920 --> 00:52:59.520
So call this the monopoly quantity, okay?

471
00:52:59.520 --> 00:53:01.120
What price will the firm charge?

472
00:53:01.120 --> 00:53:04.860
Well, it doesn't have to charge the price

473
00:53:04.860 --> 00:53:08.440
where the MR and MC curves intersect,

474
00:53:08.440 --> 00:53:10.720
because what's the highest price I can charge

475
00:53:10.720 --> 00:53:13.000
and still be able to unload this many units.

476
00:53:13.880 --> 00:53:18.720
I can go all the way up to my demand curve.

477
00:53:19.520 --> 00:53:23.760
Okay, so I can charge a price as high as this price, PM,

478
00:53:23.760 --> 00:53:25.880
and still be able to sell this many units.

479
00:53:26.800 --> 00:53:29.680
Right, notice that with the downward-sloping demand curve

480
00:53:29.680 --> 00:53:32.440
in the standard model, in equilibrium,

481
00:53:32.440 --> 00:53:35.520
the firm is charging a price that's higher

482
00:53:35.520 --> 00:53:40.120
than what its actual marginal cost is at that quantity

483
00:53:40.120 --> 00:53:45.120
to produce the QM unit, the marginal cost was this much,

484
00:53:47.080 --> 00:53:49.360
and the price I can charge is this much.

485
00:53:50.220 --> 00:53:51.760
People sometimes talk about a markup

486
00:53:51.760 --> 00:53:53.740
of price over marginal cost.

487
00:53:54.600 --> 00:53:56.460
With the downward-sloping demand curve,

488
00:53:56.460 --> 00:53:58.880
the firm can charge a price that exceeds

489
00:53:58.880 --> 00:54:00.520
the marginal cost of production.

490
00:54:02.240 --> 00:54:05.300
Whereas with the perfectly elastic demand curve,

491
00:54:07.320 --> 00:54:08.920
the price that's charged is equal

492
00:54:08.920 --> 00:54:10.520
to the Marginal Cost of Production.

493
00:54:13.660 --> 00:54:15.440
So what, you might wonder?

494
00:54:16.740 --> 00:54:18.540
Is this good, bad, or indifferent?

495
00:54:20.060 --> 00:54:22.880
Well, the standard analysis is to say,

496
00:54:24.900 --> 00:54:29.900
to put it in a really complicated language,

497
00:54:30.480 --> 00:54:34.160
good, bad.

498
00:54:35.280 --> 00:54:36.280
Okay, that's the essence

499
00:54:36.280 --> 00:54:38.400
of sort of contemporary competition theory.

500
00:54:38.920 --> 00:54:50.920
Perfectly competitive firms with perfectly elastic demand curves are good, and firms facing downward sloping demand curves having market power are bad.

501
00:54:50.920 --> 00:54:59.920
Why? Because the monopoly firm, the firm facing the downward sloping demand curve, because it's in the elastic part of the demand curve,

502
00:54:59.920 --> 00:55:08.920
produces less than it could produce to be able to increase the price over marginal cost.

503
00:55:08.920 --> 00:55:16.920
Instead of producing here where price is equal to marginal cost, the firm deliberately restricts output,

504
00:55:16.920 --> 00:55:21.920
produces less than that to be able to charge a price that exceeds marginal cost.

505
00:55:21.920 --> 00:55:27.920
Okay, and that's the alleged welfare loss or inefficiency associated with downward sloping demand curves.

506
00:55:27.920 --> 00:55:36.920
Okay, what can we say about this? Well, the first and most obvious thing to say is that every firm faces a downward sloping demand curve.

507
00:55:36.920 --> 00:55:45.920
Every actual firm faces a demand curve that is at least downward sloping in some parts.

508
00:55:45.920 --> 00:55:53.240
Parts, or in other words, no real firm in a finite world can face a perfectly elastic

509
00:55:53.240 --> 00:55:55.120
demand curve.

510
00:55:55.120 --> 00:56:03.820
The assumption of perfect elasticity assumes infinitely divisible units, so that firms

511
00:56:03.820 --> 00:56:08.840
can be infinitely small, output levels relative to the total can be infinitely small and so

512
00:56:08.840 --> 00:56:09.840
on.

513
00:56:09.840 --> 00:56:15.480
But in fact, all real firms produce discrete units of output.

514
00:56:15.480 --> 00:56:21.040
Not one gazillionth of a bushel of wheat, not one hundredth of a bottle of water, but

515
00:56:21.040 --> 00:56:23.560
discrete units.

516
00:56:23.560 --> 00:56:30.160
So there are no perfectly elastic demand curves in reality.

517
00:56:30.160 --> 00:56:39.640
So any sort of analysis that says, well, if a market is not characterized by firms with

518
00:56:39.640 --> 00:56:43.080
perfectly elastic demand curves, there's something wrong with it and we need to fix

519
00:56:43.080 --> 00:56:44.080
it.

520
00:56:44.080 --> 00:56:50.080
Well, I mean, that's not much of a guide because every market will have something wrong with it and needs to be fixed.

521
00:56:50.080 --> 00:56:52.080
It doesn't tell us what the fix ought to be.

522
00:56:52.080 --> 00:56:56.080
Okay, so no market is adequate according to this standard.

523
00:56:56.080 --> 00:57:04.080
And you sometimes hear people, even well-trained economists, being a little bit sloppy on this point and saying,

524
00:57:04.080 --> 00:57:12.080
well, yeah, of course, perfect competition is an ideal we could never reach, but we should try to get as close to it as we can.

525
00:57:12.080 --> 00:57:22.080
So market A has 50 firms in it, and market B only has 40 firms in it, so therefore market A is closer to perfect competition than market B.

526
00:57:22.080 --> 00:57:26.080
That's actually not, that's completely incorrect.

527
00:57:26.080 --> 00:57:36.080
The model of perfect competition doesn't say that if you start out with a perfectly elastic demand curve, and then as it gets a little bit more elastic,

528
00:57:36.080 --> 00:57:44.580
Sorry, a little bit less elastic than sort of incrementally consumer welfare goes down just a little bit each time.

529
00:57:44.580 --> 00:57:52.580
No, it's a discreet, it's a completely discreet kind of analysis, okay, meaning we don't know according even to these criteria

530
00:57:52.580 --> 00:57:58.080
whether a market with 50 firms is better or worse for consumers than a market with 40 firms.

531
00:57:58.080 --> 00:58:03.080
Okay, it's not a continuous kind of analysis even though it's sometimes sloppily described that way.

532
00:58:03.080 --> 00:58:18.080
Another point, which again we can say in a value-free scientific sense, is that there's something a bit odd about the notion that it's wrong for firms to produce less than some specified quantity.

533
00:58:18.080 --> 00:58:31.080
That firms should be better if they were producing this higher quantity, and it's wrong that they restrict output to QM, they should be forced to increase it somehow.

534
00:58:31.080 --> 00:58:51.080
Well, if the seller is maximizing his profit at quantity QM, then selling any additional units beyond QM means that the seller is being required to exchange units in return for less than his reservation price.

535
00:58:51.080 --> 00:59:01.080
Okay, so some transactions that would not occur as voluntary exchanges that are not mutually beneficial are being coerced by law, as it were.

536
00:59:01.080 --> 00:59:07.080
Okay, well, I mean, why should the seller be required to produce more than QM?

537
00:59:07.080 --> 00:59:14.080
By doing so, we're necessarily requiring the seller to engage in transactions that he or she would not otherwise engage in.

538
00:59:14.080 --> 00:59:19.080
Thus, in a meaningful sense, we've reduced overall welfare.

539
00:59:19.080 --> 00:59:25.940
Okay? In the sense that we're not, we're requiring, we're coercing particular transactions. Okay?

540
00:59:29.040 --> 00:59:33.560
It's easy to see this in, you know, a case of, you know, a movie star.

541
00:59:36.280 --> 00:59:38.280
You know, Brad Pitt or something.

542
00:59:39.040 --> 00:59:44.600
Right? Brad Pitt doesn't appear in every single movie he could possibly appear in.

543
00:59:44.600 --> 01:00:14.600
He only sells some of his labor services. He doesn't work 365 days a year. If he were to appear in every single movie, every single TV show, every single commercial, every single radio spot that he could possibly do, well then you would start seeing Brad Pitt everywhere and the value of having Brad Pitt, seeing him one more time would go down. He'd be less desirable if he were sort of everywhere.

544
01:00:14.600 --> 01:00:22.500
So, I mean, Brad Pitt, he picks and chooses what he wants to do.

545
01:00:22.500 --> 01:00:27.880
He reduces the total quantity of his labor that is made available for sale to increase

546
01:00:27.880 --> 01:00:34.600
the average value of his labor services, so he can increase the price that he charges.

547
01:00:34.600 --> 01:00:39.800
Well, I mean, should we require him to appear in more movies?

548
01:00:39.800 --> 01:00:51.800
I mean, again, imagine a law that says if you're a movie star, you know, with certain characteristics, you must be in 25 movies a year, even if you only want to be in 24.

549
01:00:51.800 --> 01:00:59.800
Well, I mean, that sounds a lot like slavery to me, that society or the state is forcing this guy to be in this movie he doesn't want to be in.

550
01:00:59.800 --> 01:01:16.800
It's hard to see how that would be a socially desirable policy, but yet if we say, well, the Microsoft Corporation should be required to produce more copies of Windows than it willingly is producing, is there any essential difference?

551
01:01:16.800 --> 01:01:23.800
Well, yeah, because Microsoft is a big, bad, evil company and Brad Pitt, well, he's Brad Pitt.

552
01:01:23.800 --> 01:01:53.800
Okay? Analytically, it's the same case, the same kind of case, okay? Another point is, even if you believed that, you know, it's sort of a bad thing that firms face downward sloping demand curves, gee, wouldn't it be nice? Wouldn't it be better if demand curves were perfectly elastic? Well, I mean, where is the elasticity of demand coming from? Where does the position and shape of the demand curve come from?

553
01:01:53.800 --> 01:01:59.080
This doesn't just drop from the heavens. The demand curve for any good or service reflects

554
01:01:59.080 --> 01:02:06.420
consumers' preferences for that good or service. Consumers can willingly change their demands.

555
01:02:06.420 --> 01:02:12.440
They can make a firm's demand curve as elastic or inelastic as they want through their decisions

556
01:02:12.440 --> 01:02:22.320
to purchase or to refrain from purchasing. This touches on a point that we made earlier.

557
01:02:22.320 --> 01:02:34.320
People often say that, well, what it means to have a very steep demand curve, it means that there are a few close substitutes for your product.

558
01:02:34.320 --> 01:02:42.320
The more substitutes are available, the more elastic your demand curve, the demand curve facing that firm will be.

559
01:02:42.320 --> 01:02:49.320
There's lots of different kinds of bottled water out there, and there's lots of close substitutes for bottled water.

560
01:02:49.320 --> 01:02:53.320
There's tap water, there's bottled juice, there's soft drinks and so on.

561
01:02:53.320 --> 01:02:57.320
Okay, so a bottled water producer can't charge too high a price, right?

562
01:02:57.320 --> 01:03:01.320
But, you know, Apple's iPhone,

563
01:03:01.320 --> 01:03:05.320
it's a unique product, so Apple can charge whatever price it wants.

564
01:03:05.320 --> 01:03:09.320
Or it can charge a really, really high price, because there are a few close substitutes.

565
01:03:09.320 --> 01:03:13.320
Well, again, what constitutes a close substitute?

566
01:03:13.320 --> 01:03:17.320
It isn't given by engineers. That's not an engineering term, it's a consumer

567
01:03:17.320 --> 01:03:27.320
is an evaluation term, is this cell phone a substitute for an Apple iPhone or not?

568
01:03:27.320 --> 01:03:33.320
Well, it kind of depends on you, it depends on you and me, it depends whether we think there are substitutes or not.

569
01:03:33.320 --> 01:03:44.320
So the whole notion of the availability of substitutes is a subjectively perceived economic concept, not a technological one.

570
01:03:44.320 --> 01:04:00.320
Give another example. It has to do with so-called potential competition. Imagine a seller. Say you define a particular market, say the iPhone market.

571
01:04:00.320 --> 01:04:10.320
Say you define the market so narrowly that only Apple makes the product. Yeah, there are other cell phones and handheld computers and blackberries and things, but they're not as good.

572
01:04:10.320 --> 01:04:40.320
is good. They're not really substitutes for the iPhone. Even if that were true, even if consumers did not perceive any of the competing products as being good substitutes, does that mean that Apple can charge whatever price it wants? Well, suppose it charged $1,000 per iPhone or $2,000 per iPhone, right? Even if no one else is currently making a product that consumers regard as a close substitute. If Apple charges a price that's high enough, what's that going to do? What incentives does that give to competitors?

573
01:04:40.320 --> 01:04:49.000
Inventors, to try to produce something that's a close substitute, to persuade consumers that

574
01:04:49.000 --> 01:04:52.840
their product is a substitute, to produce new products that are very similar to the

575
01:04:52.840 --> 01:04:53.840
design.

576
01:04:53.840 --> 01:05:00.800
Okay, so Apple has to think not only about what its current rivals are doing, but what

577
01:05:00.800 --> 01:05:04.760
potential rivals might be doing.

578
01:05:04.760 --> 01:05:09.400
We can see that with a really simple numerical example.

579
01:05:09.400 --> 01:05:14.640
Here's a case similar to the ones we looked at before. Suppose there's a unique seller

580
01:05:14.640 --> 01:05:20.160
of the commodity, there's one seller with a single unit of the good, five potential

581
01:05:20.160 --> 01:05:28.360
buyers, and say the seller has a very high reservation price, $290. Well, only one unit

582
01:05:28.360 --> 01:05:33.600
of this good will be exchanged, there's only one unit to exchange, B1 will get it at a

583
01:05:33.600 --> 01:05:40.800
at a price somewhere below $300 and $290. But suppose the seller believes that there's

584
01:05:40.800 --> 01:05:47.060
another potential seller out there. Someone who isn't currently in the market, maybe is

585
01:05:47.060 --> 01:05:55.600
geographically, you know, is in another area, but could come into the market if desired.

586
01:05:55.600 --> 01:06:00.540
And suppose that other seller has a reservation price of $280. Can you see that? Suppose there's

587
01:06:00.540 --> 01:06:08.300
There's a potential S2 out there who would be willing to sell for 280, and S1 knows that.

588
01:06:08.300 --> 01:06:16.780
Well now the equilibrium price for this transaction is going to be between 300 and 280, not 290.

589
01:06:16.780 --> 01:06:17.780
Why?

590
01:06:17.780 --> 01:06:25.060
Because if S1 charges a price anything above 280, then S2 will jump into the market and

591
01:06:25.060 --> 01:06:28.260
take away that sale.

592
01:06:28.260 --> 01:06:45.260
So the incumbent seller, he can't charge a price above what the potential seller, who could enter the market but hasn't yet done so, would accept.

593
01:06:45.260 --> 01:06:52.260
So sellers are constrained by the preferences of potential sellers, not only actual sellers.

594
01:06:52.260 --> 01:07:15.260
Okay, there's a great, a very important example of this has to do with so-called predatory pricing, right, which is where a large firm that has a cost advantage over smaller firms because of scale economies and so on, according to the story, you know, price is so low that the smaller firms can't compete at that low price.

595
01:07:15.260 --> 01:07:21.260
So the large firm uses prices really low to drive the small firms out of the market.

596
01:07:21.260 --> 01:07:28.260
Once they're gone, then the large firm has a monopoly position and can jack up the price to whatever it wants.

597
01:07:28.260 --> 01:07:34.260
This is what, for example, Standard Oil was accused of doing in the late 19th and early 20th centuries.

598
01:07:34.260 --> 01:07:44.260
The early antitrust laws were claimed to alleviate problems associated with so-called predatory price cutting.

599
01:07:44.260 --> 01:07:52.260
Well, there's a theoretical problem here, which turns out to be backed up very close by the empirical evidence.

600
01:07:52.260 --> 01:08:01.260
Suppose that a firm tried that strategy. It tried to price lower than other firms could afford to drive them out of the market.

601
01:08:01.260 --> 01:08:08.260
Suppose it's successful in doing so. It's charging these really low prices to force other firms out of the market.

602
01:08:08.260 --> 01:08:38.260
market. If it then tries to raise prices, what are other firms going to do? They're going to jump back in, right? People say, well, Walmart, you know, they build a Walmart on the periphery, they go to some small town, and they build a Walmart on the outskirts, and they price all the mom and pop stores out of business. Then they can charge monopoly prices, except that they never do.

603
01:08:38.260 --> 01:08:43.260
They charge low prices, and indeed a lot of the small mom and pop stores can't compete.

604
01:08:43.260 --> 01:08:47.260
And once the small mom and pop stores are gone, what does Walmart do?

605
01:08:47.260 --> 01:08:50.260
It continues to charge low prices.

606
01:08:50.260 --> 01:08:56.260
Because if it were to raise its price, the mom and pop stores would come back into the market.

607
01:08:56.260 --> 01:09:07.260
In the standard oil case, John D. Rockefeller indeed was trying to drive some of his rivals out of the market by pricing low.

608
01:09:07.260 --> 01:09:13.060
Hello, but if you think about something like an oil refinery, what does it mean to be driven

609
01:09:13.060 --> 01:09:18.940
out of the market, to go bankrupt in the oil industry? Well, there's Rockefeller has his

610
01:09:18.940 --> 01:09:25.020
refinery here, there's some rival who has a refinery here, and so Rockefeller lowers

611
01:09:25.020 --> 01:09:30.380
his price to try to drive this guy to business. He succeeds, and so the owner of the second

612
01:09:30.380 --> 01:09:37.180
refinery goes bankrupt. Well, there's still a refinery sitting there. The physical assets

613
01:09:37.180 --> 01:09:47.180
The Rockefeller could, too. Then he would have owned both refineries.

614
01:10:07.180 --> 01:10:37.180
What Rockefeller found, what actually happened to Rockefeller, is that people quickly realized that he was trying to buy out competitors to do precisely what you describe, so what happened is people started building oil refineries just so Rockefeller would buy them out, and they charged such a high price that Rockefeller complained to his colleagues about being blackmailed.

615
01:10:37.180 --> 01:10:45.180
His strategy of so-called predatory pricing was driving him bankrupt because people were building all these factories just so he would try to under-price or buy them out.

616
01:10:45.180 --> 01:10:47.180
He couldn't afford to do it anymore.

617
01:10:47.180 --> 01:10:54.180
Let me talk a little bit more specifically about the role of government here.

618
01:10:54.180 --> 01:11:02.180
I said at the very beginning of the discussion that an alternative conception of monopoly,

619
01:11:02.180 --> 01:11:10.180
The classical common law notion of monopoly is a special privilege that is granted by the state.

620
01:11:10.180 --> 01:11:13.180
There are lots of obvious examples of this.

621
01:11:13.180 --> 01:11:16.180
A patent.

622
01:11:16.180 --> 01:11:20.180
If you file a patent on a particular product or process,

623
01:11:20.180 --> 01:11:26.180
the state says that no one else can produce a closely similar product or use the same process

624
01:11:26.180 --> 01:11:29.180
for the duration of your patent for 17 years or whatever.

625
01:11:29.180 --> 01:11:31.180
Otherwise, they go to jail.

626
01:11:31.180 --> 01:11:34.620
You can sue them or fine them, they can be imprisoned.

627
01:11:34.620 --> 01:11:37.380
Okay, so a patent is a government-granted monopoly

628
01:11:37.380 --> 01:11:39.480
of finite duration, okay?

629
01:11:40.840 --> 01:11:44.140
Exclusive grants, charters, concessions,

630
01:11:44.140 --> 01:11:46.740
the grant, the exclusive rights given

631
01:11:46.740 --> 01:11:50.060
to the East India Tea Company by the British Crown,

632
01:11:50.060 --> 01:11:52.580
the exclusive rights given to charter communications

633
01:11:52.580 --> 01:11:54.380
by the city of Auburn and so on,

634
01:11:54.380 --> 01:11:57.420
would be obvious examples of government-granted monopoly.

635
01:11:58.420 --> 01:12:00.820
We talked about occupational licensing

636
01:12:00.820 --> 01:12:18.820
and the other day, compulsory licensing of attorneys and physicians and so on is a way of granting monopoly status or quasi monopoly status to those who hold the license and restricting entry by those who do not.

637
01:12:18.820 --> 01:12:24.820
International trade policy can have a monopolizing effect, right?

638
01:12:24.820 --> 01:12:34.820
I think Joe was talking about the automobile industry in the 80s where U.S. automakers persuaded Congress to impose restrictions on Japanese imports.

639
01:12:34.820 --> 01:12:40.820
What does that do to the demand curve facing American automobile producers?

640
01:12:40.820 --> 01:12:51.820
It makes it less elastic, gives them a steeper demand curve than they otherwise would have by eliminating a potential source of competition, potential competing products.

641
01:12:51.820 --> 01:13:00.820
The article on your reading list by Sudha Shanoi does a nice job of pointing out some less obvious sources of monopoly privilege.

642
01:13:00.820 --> 01:13:13.820
Even some sort of tax and regulatory policies that we don't normally associate with competition policy have an anti-competitive effect in the sense of giving special privilege to particular firms.

643
01:13:13.820 --> 01:13:19.820
Programs. Progressive taxation and state taxes and other policies that limit the accumulation

644
01:13:19.820 --> 01:13:27.340
of capital benefits incumbent producers who have already amassed large amounts of capital.

645
01:13:27.340 --> 01:13:32.980
Anything that makes it costlier for a new entrant to accumulate capital to compete with

646
01:13:32.980 --> 01:13:39.460
an incumbent is giving the incumbent an advantage, a competition advantage. Interestingly a lot

647
01:13:39.460 --> 01:13:49.460
A lot of labor and environmental restrictions, by design or not, end up conferring monopoly privilege on particular firms.

648
01:13:49.460 --> 01:13:59.460
One of the classic examples is in the environmental area, the Clean Air Act of 1970, which required factories to reduce emissions of particular kinds of,

649
01:13:59.460 --> 01:14:04.460
they weren't called greenhouse gases back then, but sulfur dioxide, for example,

650
01:14:04.460 --> 01:14:10.700
by requiring factories to install expensive equipment, you know, smoke stack scrubbers

651
01:14:10.700 --> 01:14:16.180
and to use higher cost but more environmentally friendly production technologies.

652
01:14:16.180 --> 01:14:23.700
However, the legislation exempted or grandfathered in under the old rules, incumbent producers.

653
01:14:23.700 --> 01:14:31.460
Okay, so obviously this is a way that incumbents and naturally incumbent energy producers were

654
01:14:31.460 --> 01:14:38.460
very big supporters of the Clean Air Act because it imposed costs on potential competitors.

655
01:14:39.460 --> 01:14:45.300
There's a state mandated entry barrier. The Americans with Disabilities Act is another

656
01:14:45.300 --> 01:14:51.880
example requiring designated parking spaces and ramps and specially outfitted restrooms

657
01:14:51.880 --> 01:14:58.880
and so on for Americans with disabilities. You might think that businesses would have

658
01:14:58.880 --> 01:15:13.880
would have been opposed to these kind of, you know, a very sort of onerous or draconian set of regulations requiring every firm to have certain accommodations for the disabled because it's costly to firms.

659
01:15:13.880 --> 01:15:26.880
However, if you look at the legislative history of the Americans with Disabilities Act, lobby groups representing large firms, the National Association of Manufacturers and so on,

660
01:15:26.880 --> 01:15:36.880
were very strongly in favor of the legislation, whereas lobby groups representing small firms were much more likely to oppose the legislation.

661
01:15:36.880 --> 01:15:46.880
Why? Because complying with the requirements of the ADA is much easier for a large firm that already has a staff of lawyers and so on,

662
01:15:46.880 --> 01:15:54.880
and can install wheelchair ramps and so on at a cost that's a much lower percentage of the firm's overall sales,

663
01:15:54.880 --> 01:15:59.880
or overall capital expenditures than a small firm for whom those restrictions may be very costly

664
01:15:59.880 --> 01:16:02.880
relative to the size of total operations.

665
01:16:02.880 --> 01:16:09.880
So large firms were happy to raise the costs of their smaller rivals through the regulatory process,

666
01:16:09.880 --> 01:16:15.880
thus giving them monopolistic privilege.

667
01:16:15.880 --> 01:16:22.880
Now, we turned out to just say a few words about antitrust policy itself.

668
01:16:22.880 --> 01:16:24.520
are very messy and complicated.

669
01:16:26.320 --> 01:16:28.780
Among economists who would describe themselves

670
01:16:28.780 --> 01:16:31.880
as pro-market or free-market economists,

671
01:16:31.880 --> 01:16:35.960
you find two different views about the role of the state

672
01:16:35.960 --> 01:16:38.920
as it relates to competition and monopoly.

673
01:16:38.920 --> 01:16:42.640
The view that has been expressed here this week

674
01:16:42.640 --> 01:16:46.000
and the view that you find for the most part

675
01:16:46.000 --> 01:16:47.880
in the causal realist tradition

676
01:16:47.880 --> 01:16:50.440
is that the role of government should be simply

677
01:16:50.440 --> 01:16:53.240
to refrain from granting monopoly privilege.

678
01:16:54.680 --> 01:16:57.560
Don't give exclusive licenses and charters

679
01:16:57.560 --> 01:16:59.960
and protections to particular firms

680
01:16:59.960 --> 01:17:04.040
and competition will flourish.

681
01:17:04.040 --> 01:17:07.000
However, there's another view associated with

682
01:17:07.000 --> 01:17:08.840
some other sort of pro-market,

683
01:17:08.840 --> 01:17:10.440
generally pro-market economists,

684
01:17:10.440 --> 01:17:14.160
which is that monopoly does tend to arise naturally

685
01:17:14.160 --> 01:17:18.880
on the market even in the absence of government intervention

686
01:17:18.880 --> 01:17:22.360
and that therefore government intervention is required

687
01:17:22.360 --> 01:17:25.320
to eliminate monopoly or to reduce monopoly.

688
01:17:25.320 --> 01:17:28.880
Or in other words, markets will not be competitive,

689
01:17:28.880 --> 01:17:31.560
quote unquote, unless certain government policies

690
01:17:31.560 --> 01:17:33.700
assure that competition prevails.

691
01:17:35.120 --> 01:17:38.800
So for instance, if a firm gets really large

692
01:17:38.800 --> 01:17:42.200
and has a large percent of sales in an industry,

693
01:17:42.200 --> 01:17:45.040
has a large market share, the government should step in

694
01:17:45.040 --> 01:17:47.480
and break it up into a set of smaller firms.

695
01:17:48.880 --> 01:17:56.880
If a large firm is charging prices that seem quote-unquote too high, the government should step in and force it to lower its prices.

696
01:17:56.880 --> 01:18:08.880
If two or more firms appear to be getting together and setting prices collectively, colluding over price, the government should forbid them from doing so.

697
01:18:08.880 --> 01:18:20.880
This second view is really based on a misuse, as it were, of the model of perfect competition that we looked at earlier.

698
01:18:20.880 --> 01:18:32.880
What has happened is that some economists have made the perfectly competitive model not simply an imaginary construction that could be used to illustrate the effects of this or that,

699
01:18:32.880 --> 01:18:42.880
But rather as a normative benchmark, as a description of the ideal state of affairs to which markets should have to conform.

700
01:18:42.880 --> 01:18:51.880
So when we look at any real world market, obviously we'll find that it does not meet the requirements of the perfectly competitive model.

701
01:18:51.880 --> 01:18:56.880
But, according to this tradition, the government should try to make it as close to that as it can.

702
01:18:56.880 --> 01:19:00.880
If a market has five firms, we should try to make it have ten firms.

703
01:19:00.880 --> 01:19:03.880
If it has ten firms, we should try to make it have 20 firms.

704
01:19:03.880 --> 01:19:09.880
We should try to force prices down, quantities up, make sure firms don't collude,

705
01:19:09.880 --> 01:19:14.880
try to eliminate naturally occurring barriers to entry, and so on.

706
01:19:14.880 --> 01:19:19.880
There are numerous problems with that approach, as we'll see in just a moment.

707
01:19:19.880 --> 01:19:22.880
What are some of the most important antitrust laws?

708
01:19:22.880 --> 01:19:28.880
The Sherman Act of 1890, which outlawed so-called restraints on trade.

709
01:19:28.880 --> 01:19:36.880
The Clayton Act of 1914 outlawed price discrimination, meaning charging different prices to different consumers,

710
01:19:36.880 --> 01:19:45.880
and so-called tying or bundling, namely attaching the sale of one product to the sale of another.

711
01:19:45.880 --> 01:19:49.880
So if you want to buy product A from me, you also have to buy product B from me.

712
01:19:49.880 --> 01:20:16.880
This is one of the things that Microsoft was accused of doing in the great Microsoft antitrust saga, the mid-1990s, that it was tying its internet browser, its web browser, Internet Explorer, to Windows, the operating system, and requiring people who buy Windows to use Internet Explorer rather than Netscape Navigator or some alternative.

713
01:20:16.880 --> 01:20:29.880
There's a number of fallacies associated with that kind of reasoning, but the basic argument was that Microsoft should be required to sell every product that it makes independently with no restrictions.

714
01:20:29.880 --> 01:20:35.880
I think actually Bill Gates wrote an editorial on the Wall Street Journal, the New York Times,

715
01:20:35.880 --> 01:20:40.880
I think it was the New York Times saying, basically this would be like a law that says the New York Times cannot,

716
01:20:40.880 --> 01:20:48.880
it should allow people to buy just the sports section, or just the editorial page,

717
01:20:48.880 --> 01:20:57.880
and by requiring people to buy the whole paper, this unethical and illegal anti-competitive bundling should be outlawed.

718
01:20:57.880 --> 01:21:02.880
You should be able to buy each word independently for a few pennies each if you want.

719
01:21:02.880 --> 01:21:10.880
The other legislation during the New Deal, such as the Robinson-Patman Act, which outlaws so-called predatory pricing, which we discussed just a few moments ago.

720
01:21:10.880 --> 01:21:21.880
We're almost out of time, so let me just mention some problems.

721
01:21:21.880 --> 01:21:27.880
There are a number of practical problems with the implementation of any kind of antitrust policy.

722
01:21:27.880 --> 01:21:35.880
The first is that any such policy ignores, it assumes that if a firm is large and has a large share of the market,

723
01:21:35.880 --> 01:21:41.880
it must be because there was some imperfection in the structure of that market.

724
01:21:41.880 --> 01:21:47.880
So if a firm is very successful, it must be because there are entry barriers, because it has monopolistic privilege,

725
01:21:47.880 --> 01:21:48.880
Research.

726
01:21:48.880 --> 01:21:54.200
It has a large market share, whereas having a large market share is typically the result

727
01:21:54.200 --> 01:21:59.880
of being a good performer, offering better products and services than your rivals, being

728
01:21:59.880 --> 01:22:02.880
able to produce at a lower cost than your rival.

729
01:22:02.880 --> 01:22:08.120
It isn't just magic or coincidence that Walmart is so big.

730
01:22:08.120 --> 01:22:16.400
It got to be big for a specific reason because it has an incredibly efficient supply chain

731
01:22:16.400 --> 01:22:21.320
and a number of sort of innovations in warehousing and distribution that allowed it to price

732
01:22:21.320 --> 01:22:24.780
lower than its rivals, okay?

733
01:22:24.780 --> 01:22:29.120
We talked earlier about, you know, what is a substitute and what isn't, okay?

734
01:22:29.120 --> 01:22:34.880
So even the very notion of trying to say, well, Walmart has, you know, 50 percent of

735
01:22:34.880 --> 01:22:42.100
the market, it's not totally coherent, I mean, what is the market?

736
01:22:42.100 --> 01:22:49.500
Is the market other large discount retailers like Kmart and Target?

737
01:22:49.500 --> 01:22:56.440
Is it all retail stores, does it include Sears and JCPenney, does it include department stores,

738
01:22:56.440 --> 01:23:00.620
does it include hardware stores, does it include grocery stores?

739
01:23:00.620 --> 01:23:03.660
What kind of stores are included?

740
01:23:03.660 --> 01:23:08.380
As you broaden the set of stores that are included in the market, obviously the share

741
01:23:08.380 --> 01:23:11.540
of the market that Wal-Mart has gets smaller and smaller.

742
01:23:12.580 --> 01:23:14.540
And we're thinking about this a lot

743
01:23:14.540 --> 01:23:17.380
during the days of the Microsoft antitrust case,

744
01:23:17.380 --> 01:23:19.220
where you frequently read newspaper articles

745
01:23:19.220 --> 01:23:21.420
that, well, Microsoft has 90% of the market

746
01:23:21.420 --> 01:23:23.640
for desktop computers.

747
01:23:23.640 --> 01:23:26.340
Well, I mean, is that really true?

748
01:23:26.340 --> 01:23:28.740
I mean, Microsoft may have had 90%

749
01:23:28.740 --> 01:23:30.700
of the operating system market

750
01:23:30.700 --> 01:23:35.700
for IBM PC-compatible desktop computers, right?

751
01:23:35.700 --> 01:23:42.700
So, do you include Macs in that calculation? Well, if so, then Microsoft's market share is a little bit smaller.

752
01:23:42.700 --> 01:23:48.700
Do you include, you know, Unix workstations? Well, then Microsoft's market share gets a little smaller.

753
01:23:48.700 --> 01:23:53.700
Do you include, you know, Blackberries and handheld PDAs, which are computers, in a sense?

754
01:23:53.700 --> 01:23:58.700
Well, literally they're computers. Do you include them? Well, then Microsoft's market share gets even smaller.

755
01:23:58.700 --> 01:24:03.700
Do you include big mainframe computers? Do you include Joseph Salerno's old slide rule?

756
01:24:03.700 --> 01:24:06.300
If you define the market as computing devices,

757
01:24:07.940 --> 01:24:09.460
that's what a slide rule is.

758
01:24:11.180 --> 01:24:13.460
My point is simply that the definition of the market

759
01:24:13.460 --> 01:24:15.740
is arbitrary, right?

760
01:24:15.740 --> 01:24:19.180
There's no scientific test for market definition.

761
01:24:19.180 --> 01:24:20.660
Okay, it's just a value judgment

762
01:24:20.660 --> 01:24:23.420
on the part of the antitrust authority.

763
01:24:23.420 --> 01:24:27.060
There's a sort of interest group explanation

764
01:24:27.060 --> 01:24:30.820
for a problem with antitrust as well,

765
01:24:30.820 --> 01:24:37.620
namely that many if not most antitrust suits, in some industries most antitrust suits are

766
01:24:37.620 --> 01:24:43.900
filed not by regulatory agencies but by competitors, right? So antitrust provides a mechanism for

767
01:24:43.900 --> 01:24:48.940
less efficient firms to complain about their more efficient competitors and try to get

768
01:24:48.940 --> 01:24:54.780
the government to intervene to bail them out. Okay, I'll just close with this classic quote

769
01:24:54.780 --> 01:25:00.940
from a little book called Tom Smith and His Incredible Bread Machine, which is what in

770
01:25:00.940 --> 01:25:08.020
my day would have been called a comic book, but I think now would be called a graphic novel.

771
01:25:08.020 --> 01:25:09.020
Graphic short story.

772
01:25:09.020 --> 01:25:15.140
There's a really funny story on an innovator who runs up against the antitrust authorities,

773
01:25:15.140 --> 01:25:21.500
but there's a great scene where the antitrust regulator, the antitrust official makes this

774
01:25:21.500 --> 01:25:25.760
speech to the young entrepreneur, he says, you're gouging on your prices if you charge

775
01:25:25.760 --> 01:25:30.300
more than the rest. So if you charge more than your competitors, you're price gouging.

776
01:25:30.300 --> 01:25:35.180
But it's unfair competition if you think you can charge less, predatory pricing. Second

777
01:25:35.180 --> 01:25:39.140
point that we would like to make to help avoid confusion, don't try to charge the same amount,

778
01:25:39.140 --> 01:25:46.140
that would be collusion. So there's this sort of, there's kind of a legal problem of, anti-trust

779
01:25:46.140 --> 01:25:51.140
of that, antitrust laws are sort of ex post facto,

780
01:25:51.340 --> 01:25:53.180
meaning there's no way to know ahead of time

781
01:25:53.180 --> 01:25:55.660
whether you violated them or not.

782
01:25:55.660 --> 01:25:57.340
Okay, because there's no sort of statement

783
01:25:57.340 --> 01:26:00.660
about what antitrust, there's no objective criteria

784
01:26:00.660 --> 01:26:02.420
to know whether you are engaged

785
01:26:02.420 --> 01:26:04.120
in monopolistic practices or not.

786
01:26:04.120 --> 01:26:06.300
It's decided ex post by a court.

787
01:26:06.300 --> 01:26:08.940
So you can't avoid the illegal behavior

788
01:26:08.940 --> 01:26:10.660
because it's not defined.

789
01:26:10.660 --> 01:26:13.340
Great article on that aspect of antitrust,

790
01:26:13.340 --> 01:26:31.340
Ironically, it was written by a famous economist named Alan Greenspan back in his younger days before he became a leading government official back when he was sort of a free market economist.

791
01:26:31.340 --> 01:26:41.340
Okay, I've already gone over my time, so let's have some questions and discussion.

792
01:26:41.340 --> 01:26:57.340
Would you agree with Mises that there can be at least some monopoly like resource projects?

793
01:27:11.340 --> 01:27:27.340
There are some differences of opinion about what constitutes monopoly, so Rothbard argues that there can be no monopoly except for an exclusive government grant, exclusive government privilege.

794
01:27:27.340 --> 01:27:40.340
Mises and Israel Kirzner as well have argued that that's mostly right, but there are a few very special cases where monopoly prices could emerge even on the free market.

795
01:27:40.340 --> 01:27:50.340
and there's some disagreement among Austrian economists on this point and it's difficult to explain.

796
01:27:50.340 --> 01:27:55.340
What I'll do is just refer you to some writings on that.

797
01:27:55.340 --> 01:28:05.340
There's a piece, first of all let me say it's a little bit difficult to discern exactly what Mises' position was because he changed it a little bit.

798
01:28:05.340 --> 01:28:35.340
His discussion of monopoly in the first edition of Human Action, the 1949 edition, is different from the discussion, there are subtle changes in the third edition, where his position is a little bit, he takes sort of a stronger, almost more Rothbardian position in the early, in the first edition and a slightly softer position in the later edition, but there's an article by Mises that was published, originally published only in French, isn't that right Joe, the 98 piece?

799
01:28:35.340 --> 01:28:49.340
It was not published at all. It was an unpublished paper, previously unpublished paper, that was only recently discovered, and it's in the quarterly journal of Austrian economics in 1998, right, which explains Mises' own position in more detail.

800
01:28:49.340 --> 01:29:00.340
Joe has also written a paper on the early history of monopoly theory among Austrian economists. Has that been published yet? It is in the QJA?

801
01:29:00.340 --> 01:29:23.340
Yeah, okay. If you just do a Google search for Austrian Monopoly Theory from Menger to Mund, the last person Joe deals with was an economist named Vernon Mund, M-U-N-D, you can Google it, and it explains some of these subtleties in a little bit more detail.

802
01:29:23.340 --> 01:29:29.340
That's a pretty good non-answer, isn't it?

803
01:29:29.340 --> 01:29:33.340
Any other questions you would like me not to answer?

804
01:29:33.340 --> 01:29:37.340
Okay, thank you.
