Slightly irrelevant, but I can think of a reason or two why a developer like Satoshi would want to hide himself from the entire world, especially from the government. It doesn't have to do with decentralization, as I'm sure the governments know that targeting Satoshi isn't going to make a difference (maybe an extra FUD or two, but nah). One reason is that he may had thought it'd catch on, and revealing his identity would pose his physical integrity in real risk. Another reason is tax evasion.