The Giving Pledge’s numbers, reported Sunday by the New York Times, trace a steady decline. In its first five years, 113 families signed the Pledge. Then 72 over the next five, 43 in the five after that, and just four in all of 2024. The roster includes Sam Altman, Mark Zuckerberg and Priscilla Chan, and Elon Musk — some of the most powerful people in the world, and yet, in Peter Thiel’s words to the Times, it is a club that’s “really run out of energy . . .I don’t know if the branding is outright negative,” Thiel told the outlet, “but it feels way less important for people to join.”