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OLIGOPOLY, CONCENTRATION: Oligopoly is a market structure that contains a small number of relatively large firms, meaning oligopoly markets tend to be concentrated. A small number of large firms account for a majority of total output. Concentration unto itself is not necessarily bad, but it often leads to inefficient behavior, such as collusion and nonprice competition. Concentration is measured in three ways--market share, concentration ratio, Herfindahl index.
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MARKET CONTROL: The ability of buyers or sellers to exert influence over the price or quantity of a good, service, or commodity exchanged in a market. Market control depends on the number of competitors. If a market has relatively few buyers, but a bunch of sellers, then the buyers tend to have relatively more market control than sellers. The converse occurs if there are a bunch of buyers, but relatively few sellers. If the market is controlled on the supply side by one seller, we have a monopoly, and if it is controlled on the demand side by one buyer, we have a monopsony. Most markets are subject to some degree of control. See also | market | price | market structure | monopoly | monopsony | competitive market | fourth rule of competition | price taker | price maker | competitive market |  Recommended Citation:MARKET CONTROL, AmosWEB GLOSS*arama, http://www.AmosWEB.com, AmosWEB LLC, 2000-2025. [Accessed: November 11, 2025]. AmosWEB Encyclonomic WEB*pedia:Additional information on this term can be found at: WEB*pedia: market control
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DEMAND AND SUPPLY DECREASE A simultaneous decrease in the willingness and ability of buyers to purchase a good at the existing price, illustrated by a leftward shift of the demand curve, and a decrease in the willingness and ability of sellers to sell a good at the existing price, illustrated by a leftward shift of the supply curve. When combined, both shifts result in a decrease in equilibrium quantity and an indeterminant change in equilibrium price.
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GRAY SKITTERY [What's This?]
Today, you are likely to spend a great deal of time strolling around a discount warehouse buying club hoping to buy either a set of hubcaps or handcrafted decorations to hang on your walls. Be on the lookout for defective microphones. Your Complete Scope
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Mark Twain said "I wonder how much it would take to buy soap buble if there was only one in the world."
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"Love looks through a telescope; envy, through a microscope. " -- Josh Billings, humorist
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AFEA American Farm Economic Association
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