“Digital business ecosystems” (DBEs) reflect the culmination of progressive changes in business models and organizational structure over the last 40 years. The ubiquity of many large DBEs in our economy, society, and political system is troubling, as is their significant market power, which...

Coupling weekly grocery transaction records with the exact location and opening date of entering Walmarts over an eleven year period, we examine how Supercenter entry affects prices and revenues at incumbent supermarkets. We find that entry within one mile of an incumbent causes a sharp 16% drop...