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206 Chapter 6 Entry and Exit

FIGURE 6.2

The Prices That Induce Entry and Exit May Differ

Firms will enter the industry as long as the

market price exceeds Pentry, the minimum level of average total costs. Firms will exit the industry

only if price falls below Pexit, the minimum level of average variable costs.

Average total cost

Marginal cost Average total cost

Pentry

Average variable cost

Pexit

Q

and the firm can recover its incremental costs even if operating revenues fall short of expectations. Hence, the firm is better off remaining in the market. If the firm were revisiting the decision to enter, it would have to cover both sunk entry costs and incremental operating costs, and with the benefit of hindsight it might have chosen to stay out.

Exiting firms can often avoid debt obligations by declaring bankruptcy. Diversified firms contemplating exiting a single market do not enjoy this “luxury,” however, because suppliers to a faltering division are assured payment out of the resources of the rest of the firm.

Governments can also pose barriers to exit. For example, most countries forbid owners of nuclear power plants from terminating operation without government approval. Similarly, most states do not allow privately run hospitals to shut down without regulatory approval.

ENTRY-DETERRING STRATEGIES

In the absence of structural entry barriers, incumbents may wish to engage strategically in predatory acts to actively deter entry. In general, entry-deterring strategies are worth considering if two conditions are met:

1.The incumbent earns higher profits as a monopolist than it does as a duopolist.

2.The strategy changes entrants’ expectations about the nature of postentry competition.

The reason for the first condition should be obvious; oligopoly theory (see Chapter 5) suggests that this condition is nearly always true. The second condition is usually necessary because any strategy that the incumbent engages in prior to entry can be effective only if it changes the entrant’s expectations about postentry competition. Otherwise, the entrant will pay no attention to the entry-deterring strategy, and it will prove futile.

An incumbent may expect to reap additional profits if it can keep out entrants. We now discuss three ways in which it might do so:

1.Limit pricing

2.Predatory pricing

3.Strategic bundling

Entry-Deterring Strategies 207

TABLE 6.1

Price and Profits under Different Competitive Conditions

Market Structure

Price

Annual Profit per Firm

Monopoly

$55

$1,225

Cournot duopoly

$40

$100

 

 

 

Limit Pricing

Limit pricing refers to the practice whereby an incumbent firm charges a low price to discourage new firms from entering.11 The intuitive idea behind limit pricing is straightforward. The entrant sees the low price and, being a good student of oligopoly theory, assumes that the price will be even lower after entry. If the incumbent sets the limit price low enough, the entrant will conclude that there is no way that postentry profits will cover the sunk costs of entry; it therefore stays out. At the same time, the incumbent believes that it is better to be a monopolist at the limit price than to share the market at a duopoly price. The following example explains the incumbent’s and entrant’s reasoning in more detail.

Consider a market that will last two years. Demand in each year is given by P 5 100 2 Q, where P denotes price and Q denotes quantity. Production requires nonrecoverable fixed costs of $800 per year and constant marginal costs of $10. (We ignore discounting.) In the first year, there is a single firm with the technological know-how to compete in this market. We call this firm N. Another firm that we call E has developed the technology to enter the market in year 2. Table 6.1 summarizes useful pricing and profit information about this market. This information can be confirmed by solving for the appropriate profit-maximizing prices and quantities.

If there were no danger of entry, N would select the monopoly price of $55 in each year, earning two-year total profits of $2,450. Unfortunately for firm N, firm E might enter in year 2. To determine if it should enter, E must anticipate the nature of postentry competition. Suppose that when E observes N charging $55 in the first year, it concludes that N will not be an aggressive competitor. Specifically, it expects the Cournot equilibrium to prevail in the second year, with both firms sharing the market equally. Based on this expectation, E calculates that it will earn profits of $100 if it enters. If N shares E’s belief that competition will be Cournot, then conditional on entry, firm N would also expect to earn $100 in the second year. This would give it a combined two-year profit of $1,325, which is far below its two-year monopoly profit of $2,450.

Firm N may wonder if it can do better by deterring entry. It might reason as follows:

If we set a first-year price of, say, $30, then E will surely expect the postentry price to be as low or lower. This will keep E out of the market, allowing us to earn monopoly profits in the second year.

From firm E’s point of view, the thought process might go as follows:

If firm N charges a price of $30 when it is a monopolist, then surely its price in the face of competition will be even lower. Suppose we enter and, optimistically, the price remains at $30, so that total market demand is 70. If we can achieve a 50 percent market share, we will sell 35 units and realize profits of {(30 – 10) 3 35} – 800 5 –$100. If the price is below $30, we will fare even worse. We should not enter.

208 Chapter 6 Entry and Exit

EXAMPLE 6.3 LIMIT PRICING BY BRAZILIAN CEMENT MANUFACTURERS

Like many developing nations, Brazil produces and uses a lot of cement. The 57 plants operated by Brazil’s 12 cement-producing firms output over 40 million tons per annum, making Brazil the world’s sixth leading cement maker. Each of the 57 plants dominates its local market and makes virtually no shipments to adjacent markets. This could be explained by a combination of competitive pricing and high shipping costs. After all, if cement was priced near cost, then only local producers could afford to sell it. But Brazilian cement is priced well above costs—price–cost margins often exceed 50 percent. This is more than enough to cover transportation costs.

Despite the lure of high profit margins, few firms attempt to ship cement across regions. The main exception is when a firm ships cement from a plant in one region into another region dominated by one of its own plants. This provides compelling evidence that it is economically feasible to transport cement across regions. Yet aside from these “friendly” shipments, cross-region shipping almost never occurs. The absence of substantial cross-region shipping is strong evidence that the Brazilian cement makers are tacitly dividing the market.

There is one group of cement makers that may not be willing to go along with this tacit

agreement—foreign producers. Thanks to reductions in shipping costs, cement makers in Asia have successfully increased their exports to the Americas—the foreign share of cement in the United States is nearly 20 percent. But in Brazil, that share is at most 2 percent. Part of the difference between the United States and Brazil may be due to shipping costs—shipments to Brazil must pass through the Panama Canal. But economist Alberto Salvo believes that the main reason for the near complete absence of exports to Brazil is that the Brazilian cement makers are limit pricing.12

Salvo argues that Brazil’s firms have successfully colluded in two ways. The first is by dividing the market. The second is by setting a monopoly price that deters entry by firms with higher costs. This argument is consistent with the facts about market shares. Salvo offers even more confirming evidence. He observes that during periods of high demand for cement in Brazil the price does not rise. A cartel that is not worried about entry would normally increase price during such boom times. But a cartel determined to deter entry by higher cost rivals would hold the line on price. This is exactly what Brazilian firms have been doing.

If both firms follow this logic, then N should set a limit price of $30. By doing so, it will earn {(30 2 10) 3 70} 2 800 5 $600 in the first year and full monopoly profits of $1,225 in the second year, for total profits of $1,825. This exceeds the profits it would have earned had it set the monopoly price of $55 in the first period and then shared the market in the second year.

Is Strategic Limit Pricing Rational?

The preceding arguments hew close to the intuitive explanation of limit pricing: the entrant sees the low incumbent price and reasons that it cannot prosper by entering. A closer look reveals some potential problems with this intuition. For one thing, the analysis assumes that the market lasts only two periods, after which the incumbent and entrant effectively disappear. In the real world, the potential entrant may hang around indefinitely, forcing the incumbent to set the limit price indefinitely. Depending on costs and demand, the incumbent might be better off as a Cournot duopolist than as a perpetual monopoly limit-pricer.

Entry-Deterring Strategies 209

We may also question the assumption that by setting a limit price, the incumbent is able to influence the entrant’s expectations about the nature of postentry competition. Let us explore how limit pricing plays itself out when the entrant is less easily manipulated. This analysis is based on the discussion of sequential games in the Economics Primer.

We depict the limit-pricing game in Figure 6.3. The payoffs to N and E are calculated by using the demand and cost data from the previous example. Figure 6.3 shows that in year 1, the incumbent’s strategic choices are {Pm, Pl }, where Pm refers to the monopoly price of $55 and Pl refers to the limit price of $30. The entrant observes N’s selection and then chooses from {In, Out}. If E selects “Out,” then N selects Pm in year 2. If E selects “In,” then competition is played out in year 2. We suppose that N can control the nature of year 2 competition. In particular, N can maintain the price at Pl 5 30, or it can “acquiesce” and permit Cournot competition, in which case the price will be Pc 5 40. Two-year payoffs are reported at the end node for each branch of the game tree.

The limit-pricing outcome is shown by the dashed line in Figure 6.3. Under this outcome, firm N earns total profits of $1,825 and firm E earns $0. Now comes the key point of this analysis: firm behavior in the limit-pricing outcome is not rational. (In the parlance of game theory developed in the Primer, the outcome is not a “subgame perfect Nash equilibrium.”) To see why not, we must analyze the game using the “fold-back” method.13 First consider the branch of the game tree in which E ignores the limit price and chooses to enter. According to the limit-pricing argument, E stays out because it expects that after entry has occurred, N will select Pl. But examination of the game tree shows that it is not rational for N to select Pl. Conditional on entry having already occurred, N should select Pc. N would earn total profits of $700, which exceeds the profits of $500 it earns if it selects Pl. Thus, E’s expectation of N’s postentry behavior is flawed.

E should anticipate that if it enters, N will select Pc. E should calculate its profits from entry to be $100, which exceeds the profits of 0 that it earns if it stays out.

FIGURE 6.3

Limit Pricing: Extensive Form Game

INCUMBENT

The limit-pricing equilibrium is shown by the dashed line. The incumbent selects Pb, and the potential entrant stays out. This is not a subgame perfect Nash equilibrium because if the potential entrant goes in, the incumbent will select the accommodating price Pc in the second period. The subgame perfect Nash equilibrium is depicted by the heavy line. The incumbent knows that it cannot credibly prevent entry, so it sets Pm in the first period.

 

Pm

Pl

 

ENTRANT

 

 

 

 

 

IN

OUT

IN

OUT

 

INCUMBENT

 

 

πI

 

 

πI 2450

 

1825

 

πE 0

 

πE

0

P1

Pc

P1

 

Pc

 

πI 1125

πI 1325

πI 500

πI 700

 

πE –100

πE 100

πE –100

πE 100

 

210 Chapter 6 Entry and Exit

Thus, E will choose to enter, even if N has selected Pl in the first stage of the game. Continuing to work backwards, N should anticipate that it cannot prevent entry even if it selects Pl. It should calculate that if it does select Pl, it will earn profits of $700. By selecting Pm in the first stage and Pc in the second stage, N could earn $1,325.

EXAMPLE 6.4 ENTRY BARRIERS AND PROFITABILITY IN THE JAPANESE

BREWING INDUSTRY

The Japanese market for beer is enormous, with per-capita consumption of around 60 liters per year. Four firms—Kirin, Asahi, Sapporo, and Suntory—dominate the market. The leaders, Asahi and Kirin, each have nearly 40 percent market share, and their annual sales rival those of Anheuser-Busch, the leading U.S. brewery. All four firms have been profitable for decades.

A profitable industry normally attracts entrants. Even so, Suntory is the only brewery to gain significant market share in Japan in the last 20 years, and its market share is only about 10 percent. (The fifth largest seller, Orion, has a market share below 1 percent.) Profitable incumbents combined with minimal entry usually indicate the presence of entry barriers. Japanese brewers are protected by the high costs of establishing a brand identity, and brands like Kirin’s Ichibanshibori and Asahi’s Super Dry have loyal followings. But Japanese brewers also enjoy two additional entry barriers. Entry was historically restricted by the Japanese government, and the dominance of “Ma-and-Pa” retail stores complicates access to distribution channels.

Breweries in Japan must have a license from the Ministry of Finance (MOF). Before 1994, the MOF would not issue a license to any brewery producing fewer than 2 million liters annually, creating an imposing hurdle for a start-up firm without an established brand name. In 1994, the MOF reduced the license threshold to 60,000 liters. In the wake of this change, existing small brewers formed the Japan Craft Beer Association. Many microbreweries opened, and new “craft beer bars” emerged. The number of microbreweries peaked at 310 in 1999, but dozens have subsequently closed due to a lack of differentiation

(most were poor imitations of German-style beers, though Taisetsu is an award-winning brew), entry by overseas microbreweries, the growing popularity of low-malt (and low-tax) Happoshu beer, and vigorous competition from the big four breweries. The four incumbents responded to the microbrewery movement by offering their own “gourmet” brews (e.g., Kirin’s Heartland) and seasonal beers (e.g., Kirin’s “Aki Aji” or Fall Taste) and by opening “brew pubs” (e.g., Kirin City). Restaurant owners and bar owners appreciated being able to sell gourmet beers that patrons could not find in retail stores but naturally objected to the direct competition from the breweries. Today, microbreweries still command less than 1 percent of the market.

Japanese brewers have also enjoyed protection from foreign imports, which represent less than 2 percent of the market. Nearby Korea’s local brews have failed to catch on in Japan due to an allegedly watery taste, while U.S. and European breweries must pay modest import duties and somewhat more substantial shipping costs. Most critically, distribution in Japan is difficult due to the lack of large-scale storage facilities, requiring exporters to make many small-scale shipments.

Ironically, though protected from entry in their home country, the big Japanese breweries have aggressively expanded overseas. Asahi began producing beer in China in 1994 and now has at least six plants. It also has a joint venture with Chinese brewer Tsingtao to produce and sell beer in Third World nations. Kirin is produced in the UK, Sapporo and Asahi are produced in Canada, and Suntory is produced at an Anheuser-Busch facility in Los Angeles.

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