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...

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...

We analyse the effect of competition on quality in hospital markets with regulated prices, considering both the effect of (i) introducing competition (monopoly versus competition) and (ii) increasing competition through lower transportation costs (increased substitutability) or a higher number...