Endogenous Cost Differentials between Public and Private Enterprises: A Mixed Duopoly Approach

Toshihiro Matsumura and Noriaki Matsushima

Economica, 2004, vol. 71, issue 284, pages 671-688

Abstract: We investigate a mixed duopoly, where a state-owned welfare-maximizing public firm competes against a profit-maximizing private firm. We use a Hotelling-type spatial model which represents product differentiation. We endogenize production costs by introducing cost-reducing activities. We show that the private firm's cost becomes lower than the public firm's because the private firm engages in excessive strategic cost-reducing activities. Even though each firm's cost is heterogeneous, the locations of the firms are socially efficient, given the cost differentials. Privatization of the public firm would improve welfare because it would mitigate the loss arising from excessive cost-reducing investments. Copyright (c) The London School of Economics and Political Science 2004.

Date: 2004
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