Also, let's not kid ourselves. It's not a zero sum game, but it's not the opposite either. He is discussing carpenters making a chair or whatever, and then comparing that to something completely different - the founders of facebook, sorry, they did not code every line of facebook themselves, they have thousands of employees that actually GENERATE the wealth. And, to be hyperbolic myself, if a wealthy founder gives away all his money to his employees, yes, that seems a little zero-sum if you look at it that way.
It get the article, he is trying to keep his founders from getting lynched, saying that they aren't a part of the problem, it's the rent seekers. But he is again trying to paint a black and white picture, saying "no, those guys are all bad, my guys are all good"