Some of the world’s wealthiest cheered the return of science to policymaking, while others chided Trump for not conceding. : "I look forward to working with the new administration and leaders on both sides in Congress," Gates ... [+] said in a Saturday tweet. Some of the world’s richest people publicly congratulated Joe Biden’s historic presidential victory over the weekend, even though billionaire Donald Trump hasn’t yet admitted defeat. One billionaire—hedge fund cowboy Bill Ackman, whose net worth Forbes estimates at $2 billion—directly advised Trump to concede in a tweet.