Public Monopoly, Mixed Oligopoly and Productive Efficiency

In general, the introduction of competition into the public sector seems to lead to higher cost-efficiency in service production. However, there are examples of substantial cost increases in some areas. In this paper, using a mixed oligopoly model, we investigate the effects of deregulation on the cost-reducing incentives of a public firm. Our results show that a firm that is a public monopoly has greater incentive to conduct cost-reducing investment than a public firm within mixed oligopoly market.