Been done before
I saw UMTS networks that gave users different data rates based on their subscription type. Not a huge leap to "optimise the network" (aka penalise/throttle heavy users) via policy control in this way just by expanding the enum for "subscription type" to include that information, ignoring the probably extensions added into the LTE specs - this could be set to only kick in when there's congestion, or run all the time..
Biting the hand that feeds IT
