Except Satoshi has been "anonymous" and those Bitcoin have never moved, even when the sum total of that wallet might have been $10,000 or so.
And if Satoshi's holdings now exceed $1B, well, for better or worse, multiple courts have ruled that billionaires are inherently public figures, because of their "outsized effect on public discourse".
Even if he is Satoshi he might not be a billionaire or rich at all.
It would be hilarious if he intentionally or accidentally lost the key, and has been trying to cash out through those Bitcoin adjacent business ventures ever since.