Network externalities spur the growth of networks and the adoption of network goods in two ways. First, they make it more attractive to join a network the larger its installed base. Second, they create incentives for network members to actively recruit new members. Despite indications that the...

Firms that develop user innovations for their own use often find these innovations attractive to their competitors. Thus, the user innovator may consider vertical diversification, turning to manufacturing and selling its own innovation while keeping its original business as a user. The question...

Innovativeness of a start-up is regarded as a prerequisite to acquire venture capital. However, it is neither obvious how to conceptualize nor how to measure it. Even though start-up innovativeness is of high practical relevance, no empirical research on the topic exists. This article is a first...