One of the arguments against communism is that everyone, no matter the value of their contribution to society, would be making the same money or getting the same reward. But isn't that where we're headed with capitalism? With the tech coming, it seems all our contributions will be more and more of the same value (ie: servicing the robots/AI, working as their human counterparts while the tech provides the essential work). So it seems to me that it's very possible that under capitalism we're headed for the communist ditch anyhow.