Someone is failing... hard
<soapbox -- move on if you are not interested>
It's you. He's right. I could care less about the whiners who say "I need 10GB per month to tether all my devices to my iPhone." I don't like subsidizing that. If you use that much data on your iPhone directly without tethering then more power to you -- that was AT&T's mistake for offering an unlimited plan.
But the "unlimited plan" they offered did not say "unlimited devices on one plan". It was very specifically restricted to the iPhone. To those who have cheated system, I applaud your brilliance for working around the rules. But when the rule maker starts cracking down on your circumvention crying that it is "unfair" is a bit comical.
Everybody signs a contact with their carriers when they get service. They sure as heck know what they are signing up for -- some of amount of money every month for some sort of access to their network with some set of limitations.
Sure, if you buy an iPhone it is yours. You can do what you want with it. However, your use of the carrier's network is subject to a contract with specific terms. If you don't like the terms then you don't need to agree to them. But if you choose to agree to them and try to cheat the carrier through unfair practices then don't expect others to be happy about subsidizing your practice through increased rates or degraded service.
The carrier is going to make their money one way or the other. They are a corporation driven by profits. Retail stores raise prices to compensate for shoplifting just like carriers raise rates to compensate for network expansion and lost customers due to network overload from those who circumvent the agreement they signed up for.
Any measure by the carrier to crack down on those who cheat the system is a welcome effort to those who choose not to cheat the system. They could be jerks and just decide that its not worth the effort to go after those folks and make everybody pay for it.
Do I believe that AT&T will drop their rates once they crack down on the bandwidth cheaters? Heck no. Do I believe that the network performance will get better for the rest of us without added monthly fees, probably. Either way, what's fair is fair. Nobody is born entitled to an iPhone and mobile data. But the sense of entitlement in this country has gotten so out of hand.
</soapbox>