Are you kidding? IIRC satoshi mined huge amounts of Bitcoin before anyone else knew or cared about it.
I actually remember seeing a post about it here in 2009 and initially dismissing it because I didn't think it would gain enough traction and didn't take the time to understand how it was different than previous digital cash schemes.
Bitcoin price didn't even hit $1 USD until the spring of 2011. It's true that Satoshi has a lot of Bitcoin but so does anyone who was there in Jan 2009 and had the vision to realize that Bitcoin was something fundamentally different and put effort into mining it.
Compared to the way a lot of these other blockchains are being launch Bitcoin was by far the most egalitarian in the way coins were/are distributed. Most other coins retain a huge share of coins for the founding organizations through pre-mining schemes and other shenanigans.
There's nothing egalitarian about that. Even if he told the world and tried to be fair, that's more money than any person should ever own.
It just happened that it took time for people to catch on and join his mining efforts.
He could have cashed out a long time ago for a large profit but those early coins attributed to him have never moved.
If he still have the keys. I don't think he does, but who knows. I would have at least spend some of the btc by now if I was in control of 1 million coins with a current value of more than $700 million...