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(mənōp`əlē), market condition in which there is only one seller of a certain commodity; by virtue of the long-run control over supply, such a seller is able to exert nearly total control over prices. In a pure monopoly, the single seller will usually restrict supply to that point on the supply-demand schedule that will maximize profit. In modern times, the accelerated production and competition brought about by the Industrial Revolution led to the formation of monopoly and oligopoly. Since the notion of monopoly is antithetical to the free market ideal, it has never been popular in capitalist nations. In the United States, the most famous monopoly was John D. Rockefeller's Standard Oil Trust in the late 19th cent. Despite such legislation as the 1890 Sherman Antitrust ActSherman Antitrust Act,
1890, first measure passed by the U.S. Congress to prohibit trusts; it was named for Senator John Sherman. Prior to its enactment, various states had passed similar laws, but they were limited to intrastate businesses.
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 (the first significant legal statute against monopoly), it was the Supreme Court that forced the break-up of Standard Oil, along with other monopolies. Since the 1960s, however, the U.S. Justice Dept. has occasionally been more active in attacking monopolies or near monopolies (such as AT&T and IBM); a major case in the 1990s involved the Microsoft Corp. (see Bill GatesGates, Bill
(William Henry Gates 3d), 1955–, American business executive, b. Seattle, Wash. At the age of 19, Gates founded (1975) the Microsoft Corp., a computer software firm, with Paul Allen. They began by purchasing the rights to convert an existing software package.
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Many governments, however, have created public-service monopolies by laws excluding competition from an industry. What resulted were generally publicly regulated private monopolies, such as some power, cable-television, and local telephone companies in the United States. Such enterprises usually exist in areas of "natural monopoly," where the conditions of the market make unified control necessary or desirable to the public interest. Some socialists have advocated the extension of the principle of public monopoly to all vital industries, such as coal and steel, that have an immediate effect on the general welfare of the economy. By the 1990s, however, many public utilities in the United States and elsewhere were deregulated, allowing for competition and lower prices (see utility, publicutility, public,
industry required by law to render adequate service in its field at reasonable prices to all who apply for it. Public utilities frequently operate as monopolies in their market.
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Aside from utility companies, privately controlled monopolies without state support are rare. However, the concentration of supply in a few producers, known as oligopoly, is not uncommon. In the United States, for instance, several large companies have dominated the automobile and steel industries. Since the Progressive era, the U.S. government has made most forms of monopoly, and to a lesser extent oligopoly, illegal under antitrust laws. The objective of such measures is to guarantee that price will be determined by market forces rather than by arbitrary price setting among corporations. In recent years oligopolies have grown through mergers and acquisitions. The government still grants temporary monopolies in the form of patents and copyrights to encourage the arts and sciences.


See J. Robinson, The Economics of Imperfect Competition (2d ed. 1969); D. Dewey, The Antitrust Experiment in America (1990); T. Freyer, Regulating Big Business: Antitrust in Great Britain and America, 1880–1990 (1992).


a commodity market for a particular product dominated by a single producer, who is thus able to control prices. Where a small number of producers dominate a market the term oligopoly is used. Compare PERFECT COMPETITION.


1. exclusive control of the market supply of a product or service
a. an enterprise exercising this control
b. the product or service so controlled
3. Law the exclusive right or privilege granted to a person, company, etc., by the state to purchase, manufacture, use, or sell some commodity or to carry on trade in a specified country or area


™ a board game for two to six players who throw dice to advance their tokens around a board, the object being to acquire the property on which their tokens land
References in periodicals archive ?
Proof of monopolization requires an inquiry into the relevant product and geographic markets (usually greater than 50%-60% market share), and regularly requires an economist's expertise at trial.
Al-Tarawrah in the remarks to KUNA, are entitled to enter companies' offices to examine documents and reports as part of the task to fight monopolization.
Dunkerley also analyzes the prospects for independent media companies to prosper following the curtailment of the government monopolization.
The rise of the price of bread is practically due to the importation by the Arab countries of most of their wheat needs from abroad and the interference of the factors of corruption and monopolization in the subsequent stage.
The liberalization of the audiovisual media, which put an end to the state's monopolization, paved the way for the establishment of political pluralism and the creation of a dozen of private radio stations which operate freely, Naciri said, adding that these achievements reflect Morocco's strategic options that go hand in hand with international democratic standards.
He said his actions were an attempt at protecting the party from power monopolization by any faction.
The Antimonopoly Law, the competition legislation in Japan, prohibits, in essence, three general types of activities: private monopolization, unreasonable restraints of trade, and unfair trade practices.
In one heady week in May of 2009, a front-page story in the New York Times reported the dramatic decision of Christine Varney--the Obama administration's new Antitrust Division head--to jettison the entire report on monopolization offenses released by the Bush Justice Department just eight months earlier.
Second, in response to some dissatisfaction with the state of the economic theory relevant to aftermarket tying or monopolization at the time the case was decided, a series of articles has emerged that present newer (and, perhaps, more relevant) theories of Kodak-type behavior.
As to the complaint's allegations regarding QUALCOMM's purported refusal to grant Broadcom a license for patents essential to the WCDMA 3G cellular standard on so-called FRAND (fair, reasonable and non-discriminatory) terms, the Court held "that QUALCOMM's alleged conduct does not support claims for monopolization or attempted monopolization.
They're on the "don't add" list at corporate radio stations, where they've increasingly been placed since FCC deregulation paved the way for the monopolization of the industry.