There's two rules when it comes to cellular service, or human nature for that matter.

1. People are naturally gullible. You feed them enough BS, they'll believe anything.
2. The ones who actually care about this make up the extreme minority. The rest don't feel like they can do anything about it, so they don't bother.

I run into these all the time in the FOSS world. It makes it a bear to convince people they're getting taken to the cleaners. At the same time I wonder if it also doesn't have something to do with people not wanting to admit they got suckered, and thus they shut up and don't say anything so as to pretend like they're the smart ones and not the suckers.