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