I believe he is still alive - unless he was very unlucky.
Satoshi of course is not that sorry excuse of a person claiming to be so (Craig Wright Wrong). No doubt on this one - 100%.
Yes Jbear. The following is my argument.

If Satoshi was greedy, or wanted to become possibly filthy rich in the future, he wouldn't have disappeared into thin air.
Instead, he did the only honorable thing to do. He set it free, without leaving any trace or room to be worshiped like a God or something.
It was a carefully executed plan.

He did the only thing he could do, to ensure the survival and success of BTC.
Took himself out of the equation. Like Prometheus and fire. Only the later was not so careful.
Believing Satoshi would pop out some day, cashing in his 1m coins, is believing that BTC will fail.

I rest that there is a very tiny chance that this might happen, based only on the art of seduction & misdirection on a global scale. No.