Hironobu Sakaguchi's net worth isn't something I've dug into deeply, but given his legendary status in the gaming world as the creator of 'Final Fantasy', it's safe to assume he's doing pretty well. The series has sold millions of copies worldwide, spawned countless spin-offs, and even inspired movies and merch. Considering how much influence he's had, plus his work at Mistwalker after leaving Square, I wouldn't be surprised if his net worth is in the tens of millions.
That said, Sakaguchi always struck me as someone more focused on creativity than money. His later projects like 'The Last Story' and 'Terra Battle' didn't hit 'Final Fantasy' levels of success, but they had that same passion. It's refreshing to see a guy who could've just coasted on his legacy still pushing indie-style games. Money's probably not his main motivator, but hey, I hope he's living comfortably after all the joy he's brought to gamers.