Mark Zuckerberg — Meta/Facebook

Dropped out of Harvard sophomore year after building a social network in his dorm room that now has 3.07 billion monthly active users — roughly 38% of all humans on Earth. Meta's market cap hit $1.5 trillion in 2024. Zuckerberg's personal net worth fluctuates around $180 billion, making him the 4th richest person alive. He was 19 when he left Harvard. The university named a scholarship after him. The irony of a dropout funding education isn't lost on anyone, but $180 billion buys a lot of irony.