Monopoly

MONOPOLY

MONOPOLY occurs when a single seller or provider supplies all of a particular product or service. Typically, the term is used to describe a private, commercial situation—a market containing only one seller in a private enterprise economic system. Non-business sources of supply also can hold monopoly power, such as when the government owns the only provider of a product and precludes others by law. Government also can grant exclusive right to a single business entry or group to produce a product or service, thereby creating a monopoly, albeit a private one. A monopoly thus can be legal when a government determines who will produce. Other monopolies may be technological, whereby economies of scale in production lead to decreasing average cost over a large range of output relative to demand. Under these conditions, one producer can supply the entire market at lower cost per unit than could multiple producers. This is the case of a "natural monopoly," which reflects the underlying cost structure for firms in the industry. Monopoly also can stem from mergers of previously independent producers.

The definition of monopoly requires definition of a "product" to determine whether alternative suppliers exist. With no close substitutes, the supplier has monopoly power. The price elasticity of demand, measured as the percentage change in quantity of the product demanded, divided by percentage change in price, indicates the likely proximity of near substitutes; the lower the price elasticity of demand in absolute value, the greater is the ability of the monopolist to raise the price above the competitive level.

A social and political hostility toward monopoly had already developed in Western Europe long before economists developed a theoretical analysis connecting monopoly power to inefficient use of resources. Aristotle, for example, called it unjust. Large-scale enterprise was rare in manufacturing before the nineteenth century, but local producers and workers sought to protect their incomes through restrictions on trade. Capitalism evolved over time, superimposed on preexisting economic and social relationships. During this evolution, economic literature focused frequently on the abuses of monopoly, but without specificity. Well before large manufacturing firms formed, the nation-state granted monopoly rights to colonial trade and domestic activities, often creating resentment toward all forms of monopoly related to royal favoritism. England's Statute of Monopolies (1623) reflected this resentment by limiting governmental grant of monopoly power.

The writings of Adam Smith, his contemporaries, and his nineteenth-century descendents display antipathy toward monopoly, an antagonism perhaps more pronounced in England than elsewhere. This antagonism extended to situations of a few sellers and to practices designed to limit entry into an industry, as well as monopoly per se. English common law generally found abuses of monopoly illegal, but the burden fell upon the aggrieved to bring suit. The United States followed English common law, though that law was really a multitude of laws.

In the 1830s, August Cournot formalized the economic analysis of monopoly and duopoly, apparently the first to do so. His analysis—not very well known among economists of the nineteenth century—showed that profit maximizing, monopoly firms produce less and charge a higher price than would occur in competition, assuming that both industry structures have the same cost condition. It also led eventually to the demonstration, within the context of welfare economics, that single-price monopoly reflects underlying cost structures. Price discrimination, though prohibited and vilified, might lead to a competitive, single-price level of output and efficiency. Cournot's static analysis did not take into account the effect of firm size on technological change, one potential benefit of large firms able to invest in research and development.

Public outcry about trusts—an organizational form associated with mergers that create large firms with substantial market power in many industries—led American legislators to pass the Sherman Antitrust Act in 1890. This act was the first major federal antitrust legislation in the United States and remains the dominant statute, having two main provisions. Section one declares illegal every contract or combination of companies in restraint of trade. Section two declares guilty of misdemeanor any person who monopolizes, or attempts to monopolize, any part of trade or commerce. The Clayton Act of 1914 prohibited a variety of actions deemed likely to restrict competition. Early legislation and enforcement of antitrust law reflected popular opposition to monopoly. Better understanding of economic theory and the costs of monopoly, however, gradually transformed the policy of simply opposing monopoly (antitrust) into one that more actively promotes competition. When the promotion of competition was likely to result in firms too small to exhaust economies of scale, public policy moved to regulate the natural monopoly, presumably to protect consumers from abuse of monopoly power.

Formal economic analysis of monopoly locates that industry structure at the far end of the spectrum from competition. Both are recognized as stylized types, useful in determining the extreme possibilities for industry price and output. Competitive and monopolistic models are relatively simple, because each participant is assumed to act independently, pursuing optimizing behavior without consideration of the likely reaction of other participants. The limitations of monopoly theory in predicting behavior of actual firms stimulated work on imperfect competition. Numerous case studies of American industry structure in the mid-twentieth century yielded detail about firm behavior, but no universally accepted theory.

More recently, developments in game theory permit better analysis of the interdependent behavior of oligopolistic firms. Game theory analyses during the last two decades of the twentieth century—though lacking a unique solution and easy generalizations—also permit more dynamic examination of behavior. This includes considering how a monopolist might behave strategically to maintain monopoly position. Thus, a firm might behave so as to forestall entry. Game theory models have led to reevaluation of the effects of various practices, creating a more complex interpretation of the relationship between industry structure and economic efficiency.

BIBLIOGRAPHY

Church, Jeffrey, and Roger Ware. Industrial Organization: A Strategic Approach. Boston: Irwin McGraw-Hill, 2000.

Cournot, Antoine Augustin. Researches into the Mathematical Principles of the Theory of Wealth. New York: Augustus M. Kelley, 1971.

Ellis, Howard, ed. A Survey of Contemporary Economics. Philadelphia: Blakiston, 1948. See especially the article by John Kenneth Galbraith, "Monopoly and the Concentration of Economic Power."

Neale, A. D., and D. G. Goyder. The Antitrust Laws of the U.S.A.: A Study of Competition Enforced by Law. New York: Cambridge University Press, 1980.

Schumpeter, Joseph A. History of Economic Analysis. New York: Oxford University Press, 1994.

Stigler, George, and Kenneth Boulding, eds. Readings in Price Theory: Selected by a Committee of the American Economic Association. Chicago: Richard D. Irwin, 1952. See especially the article by J. R. Hicks, "Annual Survey of Economic Theory: The Theory of Monopoly."

Tirole, Jean. The Theory of Industrial Organization. Cambridge, Mass.: MIT Press, 1988.

Ann Harper Fender

See also Antimonopoly Parties ; Antitrust Laws: Business, Big ; Economics ; Government Regulation of Business ; Sherman Antitrust Act ; Supply-Side Economics ; Trickle-Down Economics .