media ownership history

Fifty years ago there were some 50 or so media companies around the world. Today there are only 6 large media companies in the world, these companies are : Time, Disney, Bertelsmann, Viacom, News Corporation, and Vivendi Universal. How could or should I say how did this happen? It was when I started to investigate, I learned that the rule the Federal Communication Commission adopted in 1975 called the "newspaper/broadcast cross-ownership ban which prohibited a newspaper and broadcast or radio station from being co-owned changed. As of 2003 the commission adopted new media ownership rules and the ban was relaxed.