Vertically related markets, tariffs, and technology adoption

This study considers the effect of trade policy on the time of technology adoption. Home firm is dependent on a foreign vertically integrate firm for supplies of a key input before the technology adoption and can produce the intermediate input after the technology adoption. Both firms compete by Cournot in the home final product market. I show that the decrease in the tariff on final product imports and the increase in the tariff on input imports create incentives for earlier technology adoption by home firm. While maximizing the discounted sum of welfare, the domestic government should protect home firm initially. Further, provided the cost of technology adoption declined sufficiently over time, the domestic government should stimulate the earlier technology adoption by decreasing the tariff on final product imports and increasing the tariff on intermediate product imports.