He is a multi-billionaire. He simply does not need to crowdfund. This is a big bet, but if it does not pay off it will not bankrupt him or in any way risk him or his family's fortune.
Coppola isn't a multi-billionaire. His net worth by most estimates is around $300-400m. Much of that was built on successfully suing Warner Bros. in the 1990s for $80m, which he used to build out his vineyard, food, and resort businesses.
