2/ the person who have btc don't move it because there is a risk for is identity.
Those Bitcoin don't need to be moved. If I was satoshi, I would have mined bitcoin in another anonymous wallet that no one knows about it. I would have planned that I will never touch the bitcoin in Genesis block and the wallet that I disclosed to the community.
I read a topic on nonce of bitcoin transactions from satoshi. I did not save that topic so can not give you a link now.