Mergers in a Cournot Setting : Profitability and Welfare
Us Merger Guidelines consider that the anticompetitive effects of a horizontal merger is increasing in the initial market concentration and decreasing in the elasticity of demand. These ideas are studied in a setting where identical firms compete à la Cournot and marginal cost is constant. The first relationship holds if demand is convex and the second if the elasticity of demand is a good proxy for the degree of concavity.