Now, imagine if the real Satoshi's identity is found. If he/she is still alive, governments would be on his/her tail to put him/her in jail or even pay a hefty sum of taxes. Once this happens, Bitcoin might fail within the mainstream world. Of course, the community is what makes Bitcoin great. But I'm sure that the reveal of Satoshi's identity will have an influence (either positive or negative) over the cryptocurrency's price and reputation worldwide.
Assuming that the man is not yet 6 feet (1.83 m) underground, there can be the time when he might surface or someone will be exposing him. Now, this is also assuming that the name Satoshi Nakamoto really represented a single person and not a group, otherwise we can be barking on the wrong tree.
In case he will surface or be exposed, there is actually no basis for the government to do anything against him nor jail him as I see no law that he has broken by coming up with Bitcoin and the blockchain technology. Plus I don't think any government will be risking its reputation on the line by doing so.
I am seeing that he can even be proclaimed as a great hero especially by people who appreciated and got benefited by things he had done.