By the way, here and there for the last few years I've been posting my thoughts about whence bitcoin was suddenly unleashed upon the world, and government agencies have been in my mind whenever I've posted about that. It just seems extremely unbelievable that a human being could fly so far under the radar while creating something as huge as bitcoin that no one, not even any of the law enforcement or intelligence agencies around the world have been able to identify him. And you bet there would be a lot of interest in doing so, even if it was only from the IRS.
The alternatives are that 1) Satoshi isn't a single person, but someone working for a government (probably the US), or 2) The government has already gotten to whoever Satoshi is and has recruited him for whatever cryptography projects they could buy him off for. I suppose there are other alternatives, but those seem the most likely to me. Granted, I wasn't around in the early days and didn't see Satoshi's posts or know any of the original people involved, so my perspective is completely skewed--and obviously I know I could be wrong about my theories.
But don't any of you think it's weird that Satoshi apparently couldn't be traced, that he vanished without a trace while still leaving what's presumably a digital trail behind that should lead investigators to him? Oh, by the way Hydrogen: I'm not surprised whatsoever that the CIA is involved with cryptocurrency.
Without a doubt that is something that is going to be one of the big mysteries of the century, after all it is understandable that we do not know who invented the wheel, as it seems it was developed over many different civilizations and it happened so long ago.
But the fact that someone could remain anonymous in this day and age and created something so big is without a doubt suspicious, however as unbelievable as it may seem I think there is a very high chance that satoshi was indeed a single individual, and my reasoning for this is that if this was a team then someone would have talked about it already and shown evidence this is the case, but nothing like that has happened so I have the tendency to believe satoshi was working alone.
But why no one has found him? There are only three possibilities I can think, the first one is the one you mention, he was indeed found and has been recruited by government agencies, the second is that he is still free and keeping the secret, while the third possibility is that he is dead, I prefer the second scenario but I think the most likely option is the third.