After pop star Billie Eilish told billionaires to give away their money at an event, Mark Zuckerberg, who was present there, didn't clap, PEOPLE reported, citing an eyewitness. Zuckerberg's net worth is $223.1 billion. "If you're a billionaire, why are you a billionaire...No hate, but yeah, give your money away, shorties," Billie, whose net worth is reportedly $53 million, said.