As Donald Trump took the oath of office on January 20, he was flanked by the likes of Elon Musk, Jeff Bezos and Mark Zuckerberg. They had never been richer. How things have changed. As Donald Trump took the oath of office on January 20, he was flanked by the likes of Elon Musk, Jeff Bezos and Mark Zuckerberg. They had never been richer. How things have changed. Business / Markets Sydney Morning Herald – Business