Recent rounds of GATT and later WTO have advocated widespread tariffication, meaning that existing non-tariff barriers be converted into import equivalent tariffs. From an economic point of view, the effects of such tariffication are not entirely clear. The paper presents a general equilibrium model with monopolistic competition to examine the welfare effects of tariffication. The ranking of pre- and ...
In a framework with an upstream monopoly and a downstream duopoly, we analyze the impact of convex costs at the downstream level. In contrast to the case of constant marginal costs, vertical integration does not imply complete market foreclosure. While the nonintegrated downstream firm receives a strictly positive amount of the intermediate good, the downstream allocation is inefficient. However, a ...