Re: Why Aren't Carriers Doing This Already?
I used to receive a bunch of scam texts that were supposedly from phone numbers that were subscribers to my own carrier. The carrier could EASILY have gone "hey, this text message supposedly from OUR customer X is coming in via email from Russia, maybe it's not legit", but nope, they'd deliver them anyway... and they were GROUP text messages broadcasting to dozens of people simultaneously. (When I replaced my phone, they mysteriously stopped.)
+1e99 to the FCC mandating that they block at least the obvious ones!