Capitalism means freedom of choice

I'm 13 and this is deep.

This implies

1. Greed affects all systems equally
2. Capitalism is great on paper (lol)
3. All systems equally allow for "greedy people" to "take more than their share."

Essentially, your argument doesn't actually make any real analysis of the material makeup of different societal structures, it's a form of analytical nihilism that, when presented with a question, refuses to answer at all.