Open innovation: Are inbound and outbound knowledge flows really complementary?

One novel implication of the open innovation paradigm is that inflows and outflows of knowledge are complementary. We argue that engaging simultaneously in buying and selling knowledge should allow firms to increase innovation outcomes. At the same time, we identify some of the relevant costs (cognitive, transaction, and organizational costs) that “open” firms can reduce by combining knowledge inflows and outflows. Empirically, however, we find...