Unfortunately we are almost there now.I really don't think so Scott. The government won't let that many companies merge down to just two. Even if you think there will only be two because everyone else will go out of business the government still has the power to break up companies that control the entire market.
Look at NBC / Comcast. Look at the channels they own. Now imagine them merging with Time Warner and look at the channels they will own.
It would be different of Comcast was a service provider only... but when you own some of the top rated channels it changes the game greatly.