If you think this is NBC making this move, you're looking at the wrong names.
This is what Blackstone and Bain Capital and investment firms do - buy something, cut the costs, then sell it for (hopfully) profit. The three bought TWC for $3.5 billion, they'll at least make their money back.
If anything, I imagine NBC/Comcast would be very interested to keeping their ownership share if the other entities decide to part ways.