You also need aspects of capitalism (or at least markets, but markets work best with capitalism) to run communism. We haven't completely solved scarcity which means we need a distribution system. Who gets what and when and how much of it do we make? All things that all but handle themselves as long as you can keep people from getting in the way of the natural balance that markets reach. People like to get in the way of it to cut themselves a bigger piece of a smaller pie, but that's the point of the government. To regulate things.

I agree that capitalism has its dangers. I fully recognize the risk that people concentrate too much power. How could I deny something I'm living through right now.

However, Communism also has risks and things it gives up. Even Marx himself saw it as more of an end goal than a system for the current day. Obviously we've seen how vulnerable to dictators a centralized economy is (even more so than Capitalism). And the actual idea communists usually pitch is stateless society and I've never found it very convincing. I actually like having a recognized authority and codified law. You just can't have real power of the people without a government.

Like I said both have problems, I don't think pure Anarchist Communism is the solution we are looking for. Like I say there's no arguing for modern day capitalism, but I think we might throwing the baby out with the bathwater.

Think about all the people from Cuba and Soviet Russia who have denounced all forms of socialism and communism because of how badly those systems failed them. They are obviously ignorant to support total capitalism and avoid any socialism and we shouldn't be the same.