This article examines a model of competition between two types of health insurer: Health Maintenance Organizations (HMOs) and nonintegrated insurers. HMOs vertically integrate health care providers and pay them at a competitive price, while nonintegrated health insurers work as indemnity plans...

This chapter provides a simple theoretical framework to analyze optimal provision of quality-of-service of the internet by a monopolistic internet service provider (ISP) in the presence of vertical integration. There are two vertically differentiated content providers (CPs), and one of them is...