If Satoshi ever moved a single of his 1million+ coins, It would cause some serious panic and anxiety.. He has the power the dump BTC down to $1 if he dumped all those coins on the market for whatever reason.. Investors know this and monitor all those old address.. A single coin hasn't moved from those early days.. You'd know if it did by the storm on Twitter etc
I believe that if any of that was to begin to move BTC and altcoins would crash fairly quick just from the fear that the wallet(s) became compromised and someone was going to sell it all. I know that I would!
Then when the price of BTC goes down to the triple digits, use all of the billions of dollars (USD) that you earned from selling it to buy it all back up again!