It's going to be a slow death of his political career.
..
IDK man, it's one thing to lose the chattering classes and careerist politicians, another to lose the people who made Trump Supporter a big part of their personality. If the GOP tries to cut ties with Trump and publicly distance themselves from him at this point, those MAGA people ain't gonna stick around for squeaky-voiced Ivy league freak like DeSantis.
That being said, I genuinely hope they try and Trump runs a third party campaign and absolutely f**ks them.