Satoshis coins won't move until we have a working bitcoin economy - that is, until those who accept bitcoin as payment stop converting it instantly into fiat. And probably not until the bitcoin economy is mature. His coins can be effectively considered "lost" or "out of circulation" until we get there. It's a feature, not a bug.
I hate that line so much. No, a massive % of the entire supply concentrated in the hands of one actor is not a "feature". Assuming we can
trust Satoshi (ironic, eh?), it is at best "not a bug". That doesn't make it a feature. There is nothing good about this at all for a supposedly (hopefully someday) decentralized economy.
It makes Satoshi like the Bill Gates of the Bitcoin world.