is it? at the moment its 1000 Sats = 1 USD.
So if bitcoin grows by a factor of 10, its as capable as USD is now, which is also not infinitely divisible.
Now given all the inflation and that even a piece of nothing costs lots of dollars and given that we had a time decades ago, when people bought milk for cents... there is still plenty of room and we dont need infinite room if you believe in the planet having limits