That's a good theory, which assumes that cable TV survives as a mainstream medium. Many counted on FOX News as the reasonable alternative to the MSM. But that goes back, what, 20 years ago? Technology has moved on, and the traditional cable pricing model may have reached its term limit. Prediction - within 10 years, the large cable systems will do menu pricing, or be just like Blockbuster is today.
The public has craved menu pricing for well over a decade now, with nothing to show for it. In a positive light, cable could remain a “transformative” foothold for a conservative news channel, from which it could emerge into other media.
By comparison, DVD players first made a big splash in 2000, and in six years there were a thousand DVD player models for sale. Only then, in 2006, did the major studios stop releasing VHS movies.
So if cable is to be supplanted by something better, I would expect it to take a while. And in the meantime, they could make a lot of cash with it.