Monopoly.info
In economics, a monopoly (from Greek monos , alone or single + polein , to sell) exists when a specific individual or an enterprise has sufficient control over a particular product or service to determine significantly the terms on which other individuals shall have access to it. Monopolies are thus characterized by a lack of economic competition for the good or service that they provide and a lack of viable substitute goods. The verb, monopolize, refers to the process by which a firm gains persistently greater market share than what is expected under perfect competition.
A monopoly must be distinguished from monopsony, in which there is only one buyer of a product or service; a monopoly may also have monopsony control of a sector of a market. Likewise, a monopoly should be distinguished from a cartel (a form of oligopoly), in which several providers act together to coordinate services, prices or sale of goods. Monopolies can form naturally or through vertical or horizontal mergers. A monopoly is said to be coercive when the monopoly firm actively prohibits competitors from entering the field.
In many jurisdictions, competition laws place specific restrictions on monopolies. Holding a dominant position or a monopoly in the market is not illegal in itself, however certain categories of behaviour can, when a business is dominant, be considered abusive and therefore be met with legal sanctions. A government-granted monopoly or legal monopoly, by contrast, is sanctioned by the state, often to provide an incentive to invest in a risky venture or enrich a domestic constituency. The government may also reserve the venture for itself, thus forming a government monopoly.
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