It’s ludicrous that Google can simply kill your phone number and nobody bats an eye. It’s such a fundamental part of life at this point.
At the minimum, users should get a “We are no longer willing to provide you service. You have two weeks before service will end. Please switch your number to another provider if you want to keep it.”
Other than non-payment, are there other phone companies that simply disable your account without warning and without giving any reason?
I can imagine something like, "You are required to live in this geographic range, but the majority of the time you are outside of it.” Or “You are too expensive to continue to support” or any number of other things. But man, no warning, no reason, no recourse, disappear your phone access? That’s just plain bad.