Vertical structure and innovation: A study of the SoC and smartphone industries

Chenyu Yang

RAND Journal of Economics, 2020, vol. 51, issue 3, 739-785

Abstract: This article studies how vertical integration and upstream R&D subsidy affect innovation and welfare in vertically separated industries. I formulate a dynamic structural model of a dominant upstream firm and oligopolistic downstream firms that invest in complementary innovations. I estimate the model using data on the System‐on‐Chip (SoC) and smartphone industries. The results suggest that a vertical merger can increase innovation and welfare, mainly driven by the investment coordination of the merged firms. I also find that subsidizing the upstream innovation increases overall private investment, innovation, and welfare.

Date: 2020
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https://doi.org/10.1111/1756-2171.12339

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