By Dan Weil His top philanthropic cause is fighting off pandemics, which will get ‘worse’ and ‘more frequent,’ he said. Sam Bankman-Fried, founder of the world’s third-largest cryptocurrency exchange FTX, is piling up the dough, as evidenced by Forbes’ $24 billion estimate of his wealth. This puts him at No. 67 in the world. But he doesn’t plan to spend that money on himself. He told Bloomberg that he’ll keep 1% of his yearly earnings, or a minimum of $100,000. Beyond that he’ll give everything away to causes he considers worthy. He told Bloomberg that he donated $50 million in 2021, with the …