Stephen Colbert shutting down was explained otherwise when it happened.

[1] https://www.natesilver.net/p/why-colbert-got-canceled

Conjecture. But, since the article says Colbert has 10 months left, I think this would be a awesome turn of events if they canceled his show for political reasons (to get Trump's FCC approval) only to ultimately keep the show now that the FCC has approved the deal. That would be the purest form of beating Trump at his own game.