Capitalism is a form of economic organization, fascism is a form of government (or just a form of social control), antithetical to democracy or socialism.
You can't separate economic structures from State structures. Fascism is specifically a far-right entrenchment of Capitalism as a response to Capitalist decay.
yeah its totally just a crazy coincidence that fascism only arises in capitalist countries and that it does so when capitalism is facing a crisis, Im sure that the fact that the word privatization was coined to describe nazi economics is also just a coincidence, and certainly pinochet making all his economic policy based on the recommendation of the Chicago school of economics is also just a coincidence. The nazis giving medals to renowned pile of sub-human garbage and of course capitalist hero henry ford most also be just a coincidence. At every turn the fascists make it clear that they are capitalist and yet libs are so fucking deluded that they cant even recognize their own allies in the maintenance of capitalism.