I think that "teflon Don" really did go too far this time. He was clearly stoking the flames before and during the riot, even if he came just shy of actively supporting them. All of the Republican old guard are abandoning him. They did the same thing after the Access Hollywood tape, but this looks more widespread and final. IMO he won't be able to win a 2024 primary, and his brand will become somewhat tainted in the Republican party.
Another possibility is... He will start his own party. We would get to see how strong the Reps are without Trump and how strong Trump is without reps. *Assuming that Trump will be a free man by the next elections.