We show that a welfare maximizing planner in a Cournot oligopoly can easily implement the socially optimal outcome by offering the firms a per unit subsidy in return for upfront fees. The planner announces a subsidy and auctions it off to a limited number of firms. It is shown that if at least...

This paper presents a model of two competing local telecommunications networks which are mandated to interconnect. After negotiating the access charges, the companies engage in price competition. Given the prices, each consumer selects a network and determines the consumption of phone calls....