Endogenous market structure and the growth and welfare effects of economic integration.

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This paper studies the growth and welfare effects of integration in a world economy populated by global oligopolists. In economies that move from autarky to trade, growth and welfare rise because exit of domestic firms is more than compensated by entry of foreign firms so that integration generates a larger, more competitive market where firms have access to a larger body of technological spillovers that support faster growth. The effects of a gradual reduction of tariffs are different because economies start out from a situation where all firms already serve all markets. In this case, the global number of firms falls so that the variety of consumption goods and the diversity of innovation paths fall. The surviving firms, on the other hand, are larger and exploit static and dynamic economies of scale to a larger degree. These homogenization and rationalization effects work in opposite directions. Under plausible conditions, the rationalization effect dominates and growth and welfare rise.





Peretto, Pietro. Endogenous market structure and the growth and welfare effects of economic integration. Journal of International Economics 60.1 (2003): 177-201. Print



Pietro F. Peretto

Professor of Economics

Peretto is a macroeconomist who studies the sources and effects of technological change mainly using endogenous growth theory. With this focus, he has studied international trade, growth and innovation, market structure, corporate taxation, industrial organization, development and the environment, R&D, demography, and more. He has been publishing his research for nearly three decades and has had his work appear in books and leading academic journals. He is Associate Editor of the Journal of Economic Growth.

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