Conservatism doesn't build its identity on presidential candidates. It builds its identity on a series of hatreds and grievances, some temporary, others ongoing. Yes, there's a gradual evolution, so Cleek's Law is accurate:
today’s conservatism is the opposite of what liberals want today: updated daily.
But there isn't going to be a revolution -- certainly not one brought about by the collapse of a presidential campaign -- because the resentments developed and accumulated after Trump will be added to a solid foundation of old resentments that predate Trump. The GOP's true leaders aren't politicians, they're the media figures who stoke these resentments. (That's why, even in the midst of the war over Trump, the ratings at Fox News are still strong.)