This essay uses a weak straw-man: the only way to become a billionaire is by exploiting people I think the "principle of charity" or "steel-man" criticism of billionaires isn't that every single billionaire is directly exploiting people. It would be closer to something like this: The problem is that our society has feedback loops that make it hard to escape poverty, and feedback loops that let the wealthy amass more…
I think it's a little more complicated than that. I think "virtual goods" make it hard to figure out exactly where we stand these days in terms of economic health, a la this past comment of mine: