Social relationships channel information, influence, and access to scarce resources. As a consequence, social networks - the patterns of these relationships across the members of a community - influence who comes up with important innovations, whether and how rapidly those innovations get...

Salient successes and failures among organizations, such as spectacular venture capital investments or agonizing bankruptcies, affect consensus beliefs about the viability of particular markets. We argue that such vital events lead to over-reactions in the organizational entry process, with new...

Research across disciplines presumes that market categories will have strong boundaries. Categories without well-defined boundaries typically are not useful so are expected to fade away. We suggest many contexts contain lenient market categories, or less-constraining market categories, that...