I have to differ on your last point. I don’t think capitalism is necessarily at fault, nor must the working/middle classes be struggling for fascism to emerge. If anything, quite the opposite. It is the better off countries that end up turning fascist. All fascist countries are/were first world countries, in various states of advanced development.
I think it would be more accurate to say that fascism is an extreme form of imperialism, because they are ultimately very similar sentiments. A more powerful group taking advantage in various ways, of a less powerful group. Now you could say, “it’s all the same thing”, capitalism, imperialism, fascism, it’s all the same “hierarchy is the ultimate source of evil dynamic”, but it seems to me that this just reduces all these concepts to absurdity.