Firm-specific information, product differentiation, and industry equilibrium
Where consumers have imperfect information about specific firms' prices and lack information about the market, firms have informational market power. In general, improving the consumer's information about each firm's price will not necessarily lower average market price. We show, however, that certain types of improvements will lower price. Moreover, a reduction in barriers to entry (e.g., capital costs) will lower price-holding information constant. Where a significant number (but not all) consumers have perfect information, single-price equilibria are impossible.
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- Stiglitz, J E, 1979. "Equilibrium in Product Markets with Imperfect Information," American Economic Review, American Economic Association, vol. 69(2), pages 339-345, May.
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- Robert Wilson, 1977. "A Bidding Model of Perfect Competition," Review of Economic Studies, Oxford University Press, vol. 44(3), pages 511-518. Full references (including those not matched with items on IDEAS)