Yes. An Apple sysadmin could just install Beeper, watch what IP their APN requests are coming from and block it. Then repeat the process occasionally. They don

Yes. An Apple sysadmin could just install Beeper, watch what IP their APN requests are coming from and block it. Then repeat the process occasionally. They don't need to break it completely. If Beeper is unreliable, nobody is going to pay for it.