If he infact wants to sell all his BTC I think he will wait for a bigger price
It is said that satoshi holds around 700k BTC. Currently, that's about 4,883,000,000 USD.
I think that would be enough money. Wouldn't be that necessary to cash out 14,000,000,000 USD (@ 20k USD per BTC).
Besides the fact that he could never cash out that sum, thats more money than anyone could spend. Even at today's rate which isn't 'as profitable'.
Additionally it is not known whether 1) satoshi still lives and 2) still has access to the private keys. I doubt they will move ever again.