I got myself wondering what happens when a dollar doesn't buy a sat anymore?
Well, there's nothing special about that number we'll continue to use fractions but the relationship will change. Of course for that to happen a single Bitcoin would need to be priced at $100 million which is about a thousand times more than the current price so it's not really a pressing concern.
Moreover, at that price if all 21 million Bitcoin were in active addresses (which is impossible due to all the lost wallets over time) we would have a total market cap of 21 million Bitcoin because that would be a Bitcoin standard and it would be our unit of account, medium of exchange, and store of value. This is the right answer, the wrong answer would be about $2.1 quadrillion dollars, but who would measure wealth in terms of some random shitcoin that can't buy a sat with a single unit.
Well, that's all I had to share for now, later.