I believe it'll just depend on how thoroughly and indiscriminately the right is willing to purge, if they should come out on top in the inevitable struggles ahead. I've said as much on T_D before, but the Indonesians remain the kings of fedposting mountain and 60 years after what they did to sort out their Marxist infestation, they still don't have a problem with Communism and its associates rising up to threaten their society again (unlike, say, post-Pinochet Chile or post-Franco Spain). Turns out that for all its other problems, Islam was unironically right on the money about commies, women, etc.

Of course if the American right lacks the stomach to do what needs to be done, then there's nothing that can be done to help. But as we can see from the rapidity of recent developments on the left to consolidate and suppress, if they don't rapidly shape up and harden themselves, they aren't going to be winning any ongoing or future struggle anyway, so there's not much point in discussing what to do after taking a hypothetical victory lap.