I think you're confusing capitalism for anarcho-capitalism or something like that. I think most self described "capitalists" support the existence of a government that, at the very least, enforces property rights and resolves contract disputes. 'Capitalism' is not synonymous with 'no government.'

Nearly all libertarians I've ever met will readily admit that some form of government existing is desirable. Their disputes with socialists are all in shades of gray. In internet discussions on platforms that amplify extremism (reddit, etc), it may seem like the the two camps are "no government" anarcho-libertarians vs "all the government" totalitarian-communists, but in my experience either of these extreme positions are so rare they're hardly worth considering at all.