Motivated by several examples, including Internet of Things patent licensing, we analyze a model where one or more complementary platforms choose prices for a group of devices that exhibit demand externalities. We show how prices depend on each device's Katz-Bonacich centrality in a network...

We study a platformâs incentives to delist IP-infringing products and the effects of holding the platform liable for the presence of such products on innovation and consumer welfare. For a given number of buyers, platform liability increases innovation by reducing the competitive pressure faced...