Competition and Regulation Via Supply and Demand Functions in Oligopolistic-Oligopsonistic Markets
In this study, we regard the oligopolistic-oligopsonistic markets within the framework of a â€œdouble auctionâ€ in which both buyers and sellers make bids. To this end, we introduce games where declarations of supply and demand functions (which need not be true) are treated as strategic variables of producers and consumers, respectively, rather than just as â€œbinding commitmentsâ€ on the part of these parties. Existence of symmetric equilibria of each of these games is established. Most of them are shown to be unique. The equilibrium outcomes of these are compared with the standard Cournot outcome as well as among themselves regarding the market price, total quantity produced, individual consumerâ€™s surplus, individual firmsâ€™ profit and social welfare they lead to. To allow the consumers to behave strategically along with the producers, naturally makes the former better off and the latter worse off, while the net effect of this on total social welfare turns out to be case-contingent.
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