You could be right because there are so many dormant wallets that the owners might have lost access to due to forgotten passwords or seed phrases. There are so many things happening we might not understand especially seeing huge Bitcoin in a particular wallet without knowing that it was lost few years ago.
Even a lot of people think Satoshi himself probably lost access to his Bitcoin wallet. We haven't seen a single move of his Bitcoin wallet. If he had access to his wallet, or even if he were alive, he would have moved a single Bitcoin at least. But people think either Satoshi died or he lost access to his wallets. Or probably he sold a couple of his holdings, but we didn't notice.
There is a rumour that Satoshi mined 1 million Bitcoins. But do we know all the addresses belong to Satoshi? I don't think so. I personally saved most of my signature earnings and later spent it on my family. I am happy that I was able to become part of this forum.