If you go from another side to this question, then there are these thoughts:
For example, Satoshi understood that bitcoin in the future could cost very much.
In the beginning, it has and uses the client (program) 0.1.0-0.1.5, etc. which, I understand, mined coins and the transfer went every time to a new address from the address pool that the client created (100 addresses are acceptable). As soon as 100 addresses ended, the client automatically added 1 or 100 addresses to its database.
But what about the security of the computer before the lightning or short-circuit, coffee, etc.
In fact if the computer with the extracted coins burned, all disappeared. It should also be possible to quickly and / or automatically extract privat keys for printing on paper, for example.
Intuition is good, but everyone knows how to value their work, it was necessary to make such a decision.
It was like that realized?
Among you there is who mined the blocks - coins in on the first versions of the Satoshi client program?!?
If you are asking what Satoshi made with the private keys that hold the riches of the early block rewards -- nobody knows!
They may be lost forever. They may have been passed on. For all we know Satoshi is still alive and wondering what to do with his stash.
The thing is -- we don't even know which of these coins belong to Satoshi. It's safe to assume that the first few blocks were mined by Satoshi, but the network has been open to the public from the very beginning so it's hard to tell who else there was (apart from well known pioneers such as Hal Finney and Nick Szabo of course).