Product and process R&D under asymmetric demands

We develop a two-market model with asymmetric demands to examine the optimal product and process R&D under Bertrand and Cournot competition. We show that when the big market is sufficiently large and the cost parameter of product R&D is small or when the market is symmetric and the marginal disutility rate is high, the Cournot aggregate product R&D is greater than that under Bertrand competition. Next, when the big market is not sufficiently large and the cost parameter of product R&D is small, the Bertrand aggregate process R&D is greater than that under Cournot competition if the marginal disutility rate is low.