Satoshi is a real person. He is probably in his early forties. The problem with being an innovative thinker and filthy rich is that you get bored unless you're keeping yourself busy.
So, he is likely to be working somewhere in the technology world.
What if you accidentally figure out the guy you've been working with (sitting next to, is a customer, is a consultant, is your client, etc) is actually Satoshi.
What would you do?
i think Satoshi is like nickname on the underground world and this person will not cover who is he/she but i think in someday he/she will be launch his/her journey for making of bitcoin with complete computations so people will know who is he/she actually.
but, the other side, i think when someone is playing around in underground world, he/she do not want to cover who is he/she because is like an ethic of underground world that will not cover any identity of the member beside if they are really a close friend.