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"''Just One of Us': Consumers Playing Oligopoly in Mixed Markets
Journal of Economics (2011)
  • Marco Marini, University of Urbino

Consumer cooperatives represent a highly successful example of democratic form of enterprises operating in developed countries. They are usually medium to large- scale companies competing with the profit-maximizing firms in the retail sector. This paper describes this situation as a mixed oligopoly in which consumer cooperatives maximize the utility of consumer-members and, in return, refund them with a share of the profits corresponding to the ratio of their individual spending to the cooperative’s total sales. We show that when consumers possess quasi-linear preferences over a bundle of symmetrically differ- entiated goods, and companies operate using a linear technology, the presence of consumer cooperatives positively affects total industry output, as well as welfare. The effect of cooperatives on welfare proves to be even more significant when goods are either complements or highly differentiated, and when competition is à la Cournot rather than à la Bertrand.

  • consumer Co-operatives,
  • Mixed Oligopoly,
  • Profit-maximizing Firms
Publication Date
Publisher Statement
In Press in Journal of Economics, Springer Verlag
Citation Information
Marco Marini. ""''Just One of Us': Consumers Playing Oligopoly in Mixed Markets" Journal of Economics Vol. forthcoming (2011)
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