Alot of the talk is more answering why Satoshi is still keeping his identity secret. I think that he kept his identity a secret because he could.

For most inventions it is hard to keep your identity a secret. Certainly if you own a public company you can't keep your identity a secret.

Bitcoin is perhaps the most innovative and most impactiful invention where the inventor could be kept a secret. At no other time in history and with no prior business structure could the inventor and originator keep his identity a secret. He was smart enough to know that in this case he could keep his identity a secret. He was smart enough to see so far ahead to know that keeping his identity a secret was a possibility.

So he COULD do it and is likely very SHY so he wanted to do it and certainly also very PRIVATE.