Competition, Consumer Welfare and Monopoly Power

16 Pages Posted: 2 Sep 2004

See all articles by Donald Brown

Donald Brown

Yale University - Cowles Foundation

G. A. Wood

G.A. Wood and Associates

Date Written: August 2004


An applied general equilibrium analysis of monopoly power is proposed as an alternative to the partial equilibrium analyses of monopoly pricing current in antitrust economics. This analysis introduces a new notion of market equilibrium where firms with monopoly power are cost-minimizing price-takers in competitive factor markets and make supracompetitive profits in equilibrium, i.e., the monopoly price exceeds the marginal cost of production.

We assume that the primary goals of antitrust policy are the promotion of competition and the enhancement of consumer welfare. To that end, we use Debreu's coefficient of resource utilization to determine the counterfactual competitive price levels in monopolized markets and then impute the economic costs of monopolization.

Keywords: Monopoly power, Antitrust economics, Applied general equilibrium analysis

JEL Classification: D42, D58, D61, L21, L41

Suggested Citation

Brown, Donald J. and Wood, G. A., Competition, Consumer Welfare and Monopoly Power (August 2004). Available at SSRN:

Donald J. Brown (Contact Author)

Yale University - Cowles Foundation ( email )

Box 208281
New Haven, CT 06520-8281
United States

G. A. Wood

G.A. Wood and Associates

New Haven, CT 06501
United States

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