We present a fairly general model in which firms are competitors in a commercial market segment and can invest into a complementary public good like open source software. We show that, contrary to standard predictions, additional contribution to the public good by the government or a new market...

Streaming music services represent the music industry’s greatest prospective source of revenue and are well established among consumers. This paper presents a theory of a streaming music business model consisting of two types of services provided by a monopolist. The first service, which...