Media ownership and concentration has major implications for politics, business, culture, regulation, and innovation. It is also a highly contentious subject of public debate in many countries around the world. In Italy, Silvio Berlusconi's companies have dominated Italian politics. Televisa has been accused of taking cash for positive coverage of politicians in Mexico. Even in tiny Iceland, the regulation of media concentration led to that country's first and only public referendum.

Who Owns the World's Media? moves beyond the rhetoric of free media and free markets to provide a...