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Market Power In Antitrust, George A. Hay

Cornell Law Faculty Publications

The concept of market power is at the core of antitrust. Philosophically, antitrust policy is aimed primarily at preventing firms from achieving, retaining, or abusing market power. Operationally, assessing whether a firm or firms have market power or any reasonable prospect for achieving it is often the first (and sometimes, the only) step in performing an antitrust analysis.

Few would dispute that market power should play a prominent role in antitrust analysis. Nevertheless, important questions remain. Some of these questions quite naturally focus on the precise degree of importance given to market power. Is it an essential ingredient in antitrust …