It's not a secret Satoshi Nakamoto has more than 1 million of Bitcoins in his wallet, right?
If he suddenly wants to sell all his Bitcoins, could it cause a chaos in Bitcoin market making the price fall? Or is this amount too insignificant to cause any mess?
Is he dead? Did he burn them? Where are these 1million coins? In what wallet? Why would he ruin his creation? Why would he have waited this long if he needed the money?
Once you answer these questions you'll have your answer!