If this were profit driven then surely they would have some method where you could pay them more for longer access, right?

Because roaming is often the only way for international companies into more corrupt countries telecom sectors.

Mostly because now it requires doxxing yourself to SpaceX; I assume they have been told that they are not allowed to sell global service to unidentified users as their government does not wish for Russians to use it to blow up Ukrainians.

if it profit driven then spacex would gladly sells starlink to russia