Of course all of that is true but it's irrelevant because you have to take a systemic view when talking about economics. The fact is that capitalism and entrepreneurship, while not fair in the cosmic sense you present it, is the best system we have for creating wealth for both the poor and the rich.
There are many knobs and levers. The extent to which it harnesses "capitalism and entrepreneurship" for wealth creation is not the only thing defining an economic system, and arguably the poor are not best served by maximising capitalism and entrepreneurship.
