What determines vertical scope? Transactions cost economics (TCE) has been the dominant paradigm for understanding "make" vs. "buy" choices. However, the traditional focus on empirically validating or refuting TCE has taken attention away from other possible drivers of scope, and it has rarely...

This paper shows how idiosyncratic resources can be the basis of sustained profitability and persistent heterogeneity under competitive conditions: Generic inputs purchased in the market become idiosyncratic resources by investments in customization. Analytically, we show how heterogeneous firms...

Using a novel database containing the time-series details of the organizational structure of individual bank holding companies, this paper presents the first population-wide study of the transformation in business scope of U.S. banks. Expanding scope has a negative impact on performance on...