What three countries dominate worldwide television markets?

Worldwide television is dominated by huge companies more than countries, but if we want to know from where those big groups work we find Germany and the United States as their main location or born place, in Germany we have Bertelsmann SE&Co, one of the biggest media corporation on earth, and in the U.S we find Disney Associates, ltd, Comcast and Time Warner, companies that manage tv channels, radio stations, magazines and general media all over the world. 

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