Assuming he had some later money (in the Blockchain) that's maybe "just" a few dozen / hundred million worth. That's plenty money for one person without the li

Assuming he had some later money (in the Blockchain) that's maybe "just" a few dozen / hundred million worth. That's plenty money for one person without the liability and the publicity. You can live a life in pure luxury and fulfill all your material wishes. Maybe he lost the keys or threw away the machine after a year or two. There's nothing to be gained from going public in this case but a massive threat to your life.