We analyze a model of regulated competition in differentiated retail goods and services between an incumbent firm, who owns a network good (an essential input) and a potential entrant, whose cost of production is private information. The regulator sets the retail prices and the access charge...

Capture of regulatory agencies by firms or other stakeholders has given rise to a rich literature, much of which is dominated by models in which the motivation for the welfare-reducing behavior is found in side-contracting (bribes, corruption), threats (blackmail, political support) or...

Universal service obligations impose specific costs on the universal service provider. The measure of these costs and their financing have been studied along two complementary lines of reasoning: is the uni- versal service obligation sustainable? Who should bear its costs? Most often, a two-step...