Once more let me remind you what fascism is. It need not wear a brown shirt or a green shirt -- it may even wear a dress shirt. Fascism begins the moment a ruling class, fearing the people may use their political democracy to gain economic democracy, begins to destroy political democracy in order to retain its power of exploitation and special privilege.
I would say fascism is just Capitalism when it needs to put on a mask and do especially brutal acts to protect itself, then blame its sins on fascism, rather than Capitalism. It's like an alter-ego.
The final stage of Capitalism, rather than feudalism, is Imperialism. Feudalism had very specific relations and relied on workers largely producing their own goods like clothing, peasants were relatively self-sufficient and thus paid large rents to their feudal lords. Capitalism relegated the new proletariat to repetitive, small-scale tasks that, when combined with others and new industrial machinery, resulted in vast expansions in commodities produced.
Imperialism is when domestic markets are all "taken," and thus must spread internationally to super-exploit foreign populations. This is self-defeating, though, and provokes war.
Capitalism is a right-wing ideology. There is no center. The political spectrum is not a gradient. It’s either left or right. You either believe people should be above others or you believe in true equality. If you want a better future, elect people who understand this properly and fight for workers rights.
Capitalism per se still offers you the chance to buy fair and sustainable products. Nazism did not offer you the chance to save jews without risking your own life.
Nazism is of course worse than normal Capitalism, but they are the same thing underneath, reacting to different circumstances. Nazism is a Capitalist response to left wing organization in order to violently suppress it, and ensure the existing ruling class does not lose power.