It’s hard to think of a cohort of rich people in recent history as extravagantly exhibitionist as today’s tech billionaires. For the modal Silicon Valley oligarch, the life of easy luxury is not enough. The point of being unfathomably rich in our time is not simply to enjoy the fruits of extreme wealth, exert a crushing influence over the course of politics and public life, or hold up one end of the K-shaped economy: It’s to become the center of global attention, which is where real power in