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A true duopoly is a form of oligopoly where only two producers exist in a market. In reality, this definition is generally eased whereby two firms must only have dominant control over a market. In the field of industrial organization, it is the most commonly studied form of oligopoly due to its simplicity.
Duopoly Models in Economics There are two principal duopoly models, Cournot duopoly and Bertrand duopoly: Politics Modern American politics has been described as a duopoly since the Republican and Democratic parties have dominated and framed policy debate as well as the public discourse on matters of national concern for about a century and a half. Third Parties have encountered various obstacles to getting onto ballots at different levels of government, more so in recent decades. See List of political parties in the United States for a more comprehensive look at the politics of the Two-party system, Duverger's law. Examples in business Broadcasting Duopoly is also used in the broadcast television and radio industry, referring to a single company owning two outlets in the same city. In the United States, this has been frowned upon when using public airwaves, as it gives too much influence to one company. In Canada, this definition is more commonly called a "twinstick". See also concentration of media ownership. Examples in American television See also | ||||||||
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