As I see it Fascism is just Feudalism with the Bourgeoisie as the Monarchy and with higher productivity than actual Feudalism had (by, for example, giving people a bit more Education) so that overall wealth creation is higher and thus the elites taking most of it are wealthier.

Capitalism is just a softer version of it with looser control done via more indirect means (fenced fields and padlocks rather than collars on necks) in exchange for having an even higher productivity (because the "peasants" think they're free).

Think about it: what exactly other political systems are there where the Bourgeoisie is at the top of the power pyramid?

Communism was literally a response to Feudalism (at least in Russia) and naturally kept on being a response to the Bourgeoisie's version of it, Fascism.