Who’s stopping him? If Satoshi wanted to reveal himself, he could’ve done it already. The issue is, all those people claiming to know him or saying they are Satoshi are just fake Satoshis, and that's why the community doesn't trust or believe them anymore. If you're buying into the idea that Satoshi might reveal his identity based on some documentaries, then I think you should educate yourself more as you might be at risk of getting scammed in the future.