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Ch12
1.
Imperfect Competition
and Market Power • An imperfectly competitive industry is an industry in which single firms have some control over the price of their output. • Market power is the imperfectly competitive firm’s ability to raise price without losing all demand for its product. © 2002 Prentice Hall Business Publishing Principles of Economics, 6/e Karl Case, Ray Fair
2.
Defining Industry Boundaries
• The ease with which consumers can substitute for a product limits the extent to which a monopolist can exercise market power. • The more broadly a market is defined, the more difficult it becomes to find substitutes. © 2002 Prentice Hall Business Publishing Principles of Economics, 6/e Karl Case, Ray Fair
3.
Pure Monopoly
• A pure monopoly is an industry with a single firm that produces a product for which there are no close substitutes and in which significant barriers to entry prevent other firms from entering the industry to compete for profits. © 2002 Prentice Hall Business Publishing Principles of Economics, 6/e Karl Case, Ray Fair
4.
Barriers to Entry
• Things that prevent new firms from entering and competing in imperfectly competitive industries include: • Government franchises, or firms that become monopolies by virtue of a government directive. © 2002 Prentice Hall Business Publishing Principles of Economics, 6/e Karl Case, Ray Fair
5.
Barriers to Entry
• Things that prevent new firms from entering and competing in imperfectly competitive industries include: • Patents or barriers that grant the exclusive use of the patented product or process to the inventor. © 2002 Prentice Hall Business Publishing Principles of Economics, 6/e Karl Case, Ray Fair
6.
Barriers to Entry
• Things that prevent new firms from entering and competing in imperfectly competitive industries include: • Economies of scale and other cost advantages enjoyed by industries that have large capital requirements. A large initial investment, or the need to embark in an expensive advertising campaign, deter would-be entrants to the industry. © 2002 Prentice Hall Business Publishing Principles of Economics, 6/e Karl Case, Ray Fair
7.
Barriers to Entry
• Things that prevent new firms from entering and competing in imperfectly competitive industries include: • Ownership of a scarce factor of production: If production requires a particular input, and one firm owns the entire supply of that input, that firm will control the industry. © 2002 Prentice Hall Business Publishing Principles of Economics, 6/e Karl Case, Ray Fair
8.
Price: The Fourth
Decision Variable • Firms with market power must decide: 1. how much to produce, 2. how to produce it, 3. how much to demand in each input market, and 4. what price to charge for their output. © 2002 Prentice Hall Business Publishing Principles of Economics, 6/e Karl Case, Ray Fair
9.
Price and Output
Decisions in Pure Monopoly Markets • To analyze monopoly behavior we assume that: • Entry to the market is blocked • Firms act to maximize profit • The pure monopolist buys in competitive input markets • The monopolistic firm cannot price discriminate • The monopoly faces a known demand curve © 2002 Prentice Hall Business Publishing Principles of Economics, 6/e Karl Case, Ray Fair
10.
Price and Output
Decisions in Pure Monopoly Markets • With one firm in a monopoly market, there is no distinction between the firm and the industry. In a monopoly, the firm is the industry. • The market demand curve is the demand curve facing the firm, and total quantity supplied in the market is what the firm decides to produce. © 2002 Prentice Hall Business Publishing Principles of Economics, 6/e Karl Case, Ray Fair
11.
Price and Output
Decisions in Pure Monopoly Markets • The demand curve facing a perfectly competitive firm is perfectly elastic; in a monopoly, the market demand curve is the demand curve facing the firm. © 2002 Prentice Hall Business Publishing Principles of Economics, 6/e Karl Case, Ray Fair
12.
Marginal Revenue Facing
a Monopolist Marginal Revenue Facing a Monopolist (1) (2) (3) (4) QUANTITY PRICE TOTAL REVENUE MARGINAL REVENUE 0 $11 0 − 1 10 $10 $10 2 9 18 8 3 8 24 6 4 7 28 4 5 6 30 2 6 5 30 0 7 4 28 −2 8 3 24 −4 9 2 18 −6 10 1 10 −8 © 2002 Prentice Hall Business Publishing Principles of Economics, 6/e Karl Case, Ray Fair
13.
Marginal Revenue Curve
Facing a Monopolist • For a monopolist, an increase in output involves not just producing more and selling it, but also reducing the price of its output to sell it. • At every level of output except one unit, a monopolist’s marginal revenue is below price. © 2002 Prentice Hall Business Publishing Principles of Economics, 6/e Karl Case, Ray Fair
14.
Marginal Revenue and
Total Revenue • A monopolist’s marginal revenue curve shows the change in total revenue that results as a firm moves along the segment of the demand curve that lies exactly above it. © 2002 Prentice Hall Business Publishing Principles of Economics, 6/e Karl Case, Ray Fair
15.
Price and Output
Choice for a Profit- Maximizing Monopolist • A profit-maximizing monopolist will raise output as long as marginal revenue exceeds marginal cost (like any other firm). • The profit-maximizing level of output is the one at which MR = MC. © 2002 Prentice Hall Business Publishing Principles of Economics, 6/e Karl Case, Ray Fair
16.
The Absence of
a Supply Curve in Monopoly • A monopoly firm has no supply curve that is independent of the demand curve for its product. • A monopolist sets both price and quantity, and the amount of output supplied depends on both its marginal cost curve and the demand curve that it faces. © 2002 Prentice Hall Business Publishing Principles of Economics, 6/e Karl Case, Ray Fair
17.
Price and Output
Choices for a Monopolist Suffering Losses in the Short-Run • It is possible for a profit-maximizing monopolist to suffer short-run losses. • If the firm cannot generate enough revenue to cover total costs, it will go out of business in the long-run. © 2002 Prentice Hall Business Publishing Principles of Economics, 6/e Karl Case, Ray Fair
18.
Perfect Competition and
Monopoly Compared • In a perfectly competitive industry in the long-run, price will be equal to long-run average cost. The market supply is the sum of all the short-run marginal cost curves of the firms in the industry. © 2002 Prentice Hall Business Publishing Principles of Economics, 6/e Karl Case, Ray Fair
19.
Perfect Competition and
Monopoly Compared • Relative to a competitively organized industry, a monopolist restricts output, charges higher prices, and earns positive profits. © 2002 Prentice Hall Business Publishing Principles of Economics, 6/e Karl Case, Ray Fair
20.
Collusion and Monopoly
Compared • Collusion is the act of working with other producers in an effort to limit competition and increase joint profits. • When firms collude, the outcome would be exactly the same as the outcome of a monopoly in the industry. © 2002 Prentice Hall Business Publishing Principles of Economics, 6/e Karl Case, Ray Fair
21.
The Social Costs
of Monopoly • Monopoly leads to an inefficient mix of output. • Price is above marginal cost, which means that the firm is underproducing from society’s point of view. © 2002 Prentice Hall Business Publishing Principles of Economics, 6/e Karl Case, Ray Fair
22.
The Social Costs
of Monopoly • The triangle ABC measures the net social gain of moving from 2,000 units to 4,000 units (or welfare loss from monopoly). © 2002 Prentice Hall Business Publishing Principles of Economics, 6/e Karl Case, Ray Fair
23.
Rent-Seeking Behavior
• Rent-seeking behavior refers to actions taken by households or firms to preserve positive profits. • A rational owner would be willing to pay any amount less than the entire rectangle PmACPc to prevent those positive profits from being eliminated as a result of entry. © 2002 Prentice Hall Business Publishing Principles of Economics, 6/e Karl Case, Ray Fair
24.
Government Failure
• The idea of rent-seeking behavior introduces the notion of government failure, in which the government becomes the tool of the rent-seeker, and the allocation of resources is made even less efficient than before. © 2002 Prentice Hall Business Publishing Principles of Economics, 6/e Karl Case, Ray Fair
25.
Public Choice Theory
• The idea of government failure is at the center of public choice theory, which holds that public officials who set economic policies and regulate the players act in their own self-interest, just as firms do. © 2002 Prentice Hall Business Publishing Principles of Economics, 6/e Karl Case, Ray Fair
26.
Remedies for Monopoly:
Antitrust Policy • A trust is an arrangement in which shareholders of independent firms agree to give up their stock in exchange for trust certificates that entitle them to a share of the trust’s common profits. A group of trustees then operates the trust as a monopoly, controlling output and setting price. © 2002 Prentice Hall Business Publishing Principles of Economics, 6/e Karl Case, Ray Fair
27.
Landmark Antitrust Legislation
• Congress began to formulate antitrust legislation in 1887, when it created the Interstate Commerce Commission (ICC) to oversee and correct abuses in the railroad industry. • In 1890, Congress passed the Sherman Act, which declared every contract or conspiracy to restrain trade among states or nations illegal; and any attempt at monopoly, successful or not, a misdemeanor. © 2002 Prentice Hall Business Publishing Principles of Economics, 6/e Karl Case, Ray Fair
28.
Landmark Antitrust Legislation
• The rule of reason is a criterion introduced by the Supreme Court in 1911 to determine whether a particular action was illegal (“unreasonable”) or legal (“reasonable”) within the terms of the Sherman Act. © 2002 Prentice Hall Business Publishing Principles of Economics, 6/e Karl Case, Ray Fair
29.
Landmark Antitrust Legislation
• The Clayton Act, passed by Congress in 1914, strengthened the Sherman Act and clarified the rule of reason. The act outlawed specific monopolistic behaviors such as tying contracts, price discrimination, and unlimited mergers. © 2002 Prentice Hall Business Publishing Principles of Economics, 6/e Karl Case, Ray Fair
30.
Landmark Antitrust Legislation
• The Federal Trade Commission (FTC), created by Congress in 1914, was established to investigate the structure and behavior of firms engaging in interstate commerce, to determine what constitutes unlawful “unfair” behavior , and to issue cease-and-desist orders to those found in violation of antitrust law. © 2002 Prentice Hall Business Publishing Principles of Economics, 6/e Karl Case, Ray Fair
31.
The Enforcement of
Antitrust Law • The Wheeler-Lea Act (1938) extended the language of the Federal Trade Commission Act to include “deceptive” as well as “unfair” methods of competition. • The Antirust Division (of the Department of Justice) is one of two federal agencies empowered to act against those in violation of antitrust laws. It initiates action against those who violate antitrust laws and decides which cases to prosecute and against whom to bring criminal charges. © 2002 Prentice Hall Business Publishing Principles of Economics, 6/e Karl Case, Ray Fair
32.
The Enforcement of
Antitrust Law • The courts are empowered to impose a number of remedies if they find that antitrust law has been violated. • Consent decrees are formal agreements on remedies between all the parties to an antitrust case that must be approved by the courts. Consent decrees can be signed before, during, or after a trial. © 2002 Prentice Hall Business Publishing Principles of Economics, 6/e Karl Case, Ray Fair
33.
Natural Monopoly
• A natural monopoly is an industry that realizes such large economies of scale in producing its product that single-firm production of that good or service is most efficient. © 2002 Prentice Hall Business Publishing Principles of Economics, 6/e Karl Case, Ray Fair
34.
Natural Monopoly
• With one firm producing 500,000 units, average cost is $1 per unit. With five firms each producing 100,000 units, average cost is $5 per unit. © 2002 Prentice Hall Business Publishing Principles of Economics, 6/e Karl Case, Ray Fair
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