Capitalism works and Steve Ballmer is the proof. I honestly don't understand why anyone would want to change the system seeing as how it works so well.
I'm not sure that we should ever confuse an anecdote with a proof (Exercise: the former is a valid latter in which specific situation?), but Steve Ballmer, for a long time (still?), did have the distinction of being unique: the world's only billionaire who had a boss.