The fact that Democrats swept Georgia and Arizona in 2020 suggests they aren’t as secure in their positions as they like to pretend. That said, a lot of this hinges on the political power of municipalities (and their resident corporate anchors). It still all runs back to capitalist institutions and financial brokers.

A fascist turn in the US would ultimately pit business interests against one another, as power brokers try to cut one another off at the knees by bankrupting or taking over their rivals. The only end-game there would be to build the kind of economic firewalls that the US loves to build around its foreign enemies - Cuba, NK, Russia, etc. We’d just turn that policy inward and start building walls between North and South Carolina or by sanctioning all the big businesses in downtown Austin to death.