Digital technology is the representation of information in bits, reducing the costs of collecting, storing, and parsing customer data. This has led to a reduction of five costs: Search costs, replication costs, transportation costs, tracking costs, and verification costs. In this article, we...

This paper examines the causes of market concentration in advertising-supported online markets such as sports, news, and email. In particular, it is the first paper to explore the relationship between concentration and product differentiation, economies of scale, market size, advertising,...

We use evidence from store openings by a bricks-and-clicks retailer to examine the drivers of substitution and complementarity between online and offline retail channels. Our evidence supports the coexistence of substitution across channels and complementarity in demand. In places where the...

We empirically examine the trade-off between the benefits of buying online and the benefits of buying in a local retail store. How does a consumer's physical location shape the relative benefits of buying from the online world? We explore this problem using data from Amazon on the top selling...