Warren Buffett is like Bill Gates. He's an evil billionaire (all billionaires are evil) who keeps pretending to be a good guy so people won't despise him.
Nobody earns a billion dollars, we've decided as a society that even global leaders, scientists and life saving doctors who do the most important work don't earn that much. It's impossible for a human to be valuable enough to earn a billion dollars. Therefore every billionaire is where he is, because he stole the wealth of the people below him who did the actual work. Every billionaire is a wage thief.