If capitalists loaded an Olympic sized swimming pool with billions of dollars open and unguarded, and a mass of proletariat came upon it, would you wonder why they rob what's been robbed from them?

Unfocus from the questions of how a market should operate and what just economic conditions are and what sort of ethic is required of a revolutionary, a bunch of people (many of whom are emphatically not rich) are taking money from billionaires. If your politics are so pure that's a bad thing, I don't want it ¯_(ツ)_/¯