Often, downvotes are about the way an opinion is presented, not the opinion itself. Saying that capitalism is the real shoplifting is vague and unproductive, and it doesn't contain a counterproposal, so as a statement it's hard to engage with.

If the GP had come up with a proposal for how to fix this, which would probably have meant elaborating on how to completely abolish all private property in the context of the modern US, I think the post would not have been so heavily downvoted.