This paper analyzes the effects of vertical foreign direct investment on industry structure, prices and welfare in two different scenarios. In the first case, the total number of firms is fixed, and we show that national and multinational firms may coexist. In the second case, market entry is...

We introduce technology choice into a model of monopolistic competition and analyze the structural effects of changes in market size. A larger market leads to the adoption of a large-scale technology. If a technology switch occurs, the number of firms decreases, and a rationalizing effect...

This article studies the design of optimal mechanisms to regulate entry in natural oligopoly markets, assuming the regulator is unable to control the behaviour of firms once they are in the market. We adapt the Clark-Groves mechanism, characterize the optimal mechanism that maximizes the...