New empirical evidence shows substantial heterogeneity in the altruism of healthcare providers. Spurred by this evidence, we build a spatial quality competition model with altruism heterogeneity. We find that more altruistic healthcare providers supply relatively higher quality levels and...

Nominally, competition policy is just as concerned with quality as it is with prices. But in practice, courts and competition authorities rarely analyze quality effects as rigorously as they analyze price effects. We begin this paper by examining some of the reasons why that is so. We then delve...

Understanding the effects of competition among Internet service providers on the availability and quality of broadband is important for policies aimed at decreasing the digital divide. To improve this understanding, I develop and estimate a structural model of vertical differentiation using...