Only in the confused world of Silicon Valley is accepting $100M+ to fail considered heroic. Giving the money back would be kind of heroic.
Steve Jobs took a nearly bankrupt company and turned it into the richest company in history. And he didn't care about making money off it at all, or he'd have been the richest person in the world too. That's heroic.
Elon Musk put 100% of his personal fortune into risky world-changing startups. That's heroic.