> I have a theory that from now on, the candidate who wins the presidential election will be the one that generates the most advertising revenue for the media companies.

That's not actually a big change; Free media has always been powerful, and it's always been awarded based on the media’s business interests, mostly advertising dollars (except for outlets that are in the game to drive a specific agenda even when that involves sacrificing profit opportunities.)

Probably true! I halfway expect Chris Christie's new reality show to start just after Trump's reelection.

It's kind of a trap for old media, however. They are losing the only advantage they had, credibility. When that's gone, the bitter clingers will still watch for a while, but they won't find any new viewers/listeners/readers.