He's creating value of course, and if this hadn't been downvoted to the bottom of the page you'd have gotten a lot more 'economics isn't zero-sum' type replies. Politics, that is influence in politics, is zero-sum however, and wealth is a huge factor, perhaps the biggest factor, in determining that influence. So while economics isn't zero-sum, it gives you a somewhat proportional stake in a game that is, which is where the problem with wealth disparity lies.