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Concept
Oligopsone
Résumé
An oligopsony (from Greek ὀλίγοι (oligoi) "few" and ὀψωνία (opsōnia) "purchase") is a market form in which the number of buyers is small while the number of sellers in theory could be large. This typically happens in a market for inputs where numerous suppliers are competing to sell their product to a small number of (often large and powerful) buyers. It contrasts with an oligopoly, where there are many buyers but few sellers. An oligopsony is a form of imperfect competition.
The terms monopoly (one seller), monopsony (one buyer), and bilateral monopoly have a similar relationship.
In each of these cases, the buyers have a major advantage over the sellers. They can play off one supplier against another, thus lowering their costs. They can also dictate exact specifications to suppliers, for delivery schedules, quality, and (in the case of agricultural products) crop varieties. They also pass off much of the risks of overproduction, natural losses, and variations in cyclical demand to the suppliers.
One example of an oligopsony in the world economy is cocoa, where three firms (Cargill, Archer Daniels Midland, and Barry Callebaut) buy the vast majority of world cocoa bean production, mostly from small farmers in third-world countries. Likewise, American tobacco growers face an oligopsony of cigarette makers, where three companies (Altria, Brown & Williamson, and Lorillard Tobacco Company) buy almost 90% of all tobacco grown in the US and other countries.
In U.S. publishing, five publishers known as the Big Five account for about two thirds of books published. Each of the companies runs a series of specialized imprints, which cater to different market segments and often carry the name of formerly independent publishers. Imprints create the illusion that there are many publishers, but imprints within each publisher co-ordinate to avoid competing with one another when they seek to acquire new books from authors.
Thus, authors have fewer truly-independent outlets for their work.
Source officielle
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