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Multiproduct Price Regulation Under Asymmetric Information
Author(s) -
Armstrong Mark,
Vickers John
Publication year - 2000
Publication title -
the journal of industrial economics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.93
H-Index - 77
eISSN - 1467-6451
pISSN - 0022-1821
DOI - 10.1111/1467-6451.00115
Subject(s) - discretion , private information retrieval , microeconomics , price elasticity of demand , economics , information asymmetry , shock (circulatory) , welfare , demand shock , market economy , medicine , statistics , mathematics , political science , law
We discuss the regulation of a multiproduct monopolist when the firm has private information about cost or demand conditions. The regulator offers the firm a set of prices from which to choose. When there is private information only about costs, the firm should always have a degree of discretion over its pricing policy. When uncertainty concerns demand, whether discretion is desirable depends on how demand elasticities vary with the scale of demands. If a positive demand shock is associated with a reduction in the market elasticity, discretion is good for overall welfare; otherwise it is not.