I would guess the following about Satoshi:
1) He is alive and owns some substantial amount of coins. Of course nobody knows how many he has, for this would be impossible to know.
2) He is hiding and will never come forward as Satoshi. He must read the forums regularly, and is likely astounded that Bitcoin has grown to such a project. I bet he gets a little teary whenever he reads the latest developments, and in the back of his mind is thinking, "holy shit look what I did!! Badass!"
1. Yes I'd think it is possible to know. We know when Satoshi released the bitcoin software, we can put a high probability that Satoshi made the first couple of transactions (the largest ones) for his own benefit, as hardly anyone would've known about the technology at that point. Sorry, I cant be bothered to do the research right now, but Im sure its not difficult to figure out. We also have an archive of all the forum and newsgroup posts. It cannot be difficult to work out how many coins Satoshi owns. Heres a subject for the next sensational news article about bitcoin.
2. Im sure Satoshi is not at all astounded about Bitcoin. I'm no expert in C++, but from what I've read the original bitcoin code was of exceptional quality. Many potential hacks had been anticipated. Its clear that alot of work went into developing the concept, and that it was developed over a number of years. Its also clear that the authors were incredibly smart and had anticipated many future problems, which is why the technology has survived so long exposed to the world's hackers and computer experts. It's clear that the reason Satoshi decided to become anonymous from the beginning was because he anticipated the explosiveness of his invention. Its clear that's why Satoshi published his paper in 2009 as Satoshi, and not as his own name.
Really? My Google searches just point to lots of theories and suspects. I can't find any 'Satoshi is XYZ' anywhere as you claim.
Satoshi has always been Satoshi for a reason. Satoshi never wanted to be un-anonymous. Therefore Im not surprised that the authors will not reveal themselves as being Satoshi. However you will find a very similar patent to Satoshi's paper published in the month's preceding Satoshi's paper authored by 3 people. It's clear that the authors of this patent, having stumbled upon the bitcoin idea, made a decision to publish it fully in a pseudonymn because they foresaw the potential for the technology. They also foresaw it would be better for their networth & stress levels to just sit on a huge amount of coins and remain anonymous than to continue development in the mainstream. There's a good article that sums all of this up by providing clear evidence of who these authors are.
PS. Im not going to link to the article because this post may be removed if I link to it... thats why I said u have to use Google.