I ..... thought T-Mobile's policy was generally well known? Especially in the face of a few years ago, At&t hitting up folks for astronomical bills when iPhones were new, and folks were blasting past their data limits? I've had data with them since they were VoiceStream, and knew what each data plan offered.
Anyone who asked, I told them that T-Mobile's policy was WAY more consumer friendly than the other carriers, especially for someone who absolutely needs a data connection (and doesn't wander outside their relatively weak coverage)
What if the FCC mandated some kind of 'nutrition label' for ISP plans, that specified the technical points of their service offering? Spell out limits, min/max latency, best-effort/guaranteed, fair/shaped and what happens when limits are exceeded? Wouldn't be clearly in their realm of power to regulate how the these plans are marketed, rather than let the ISP's confuses folks with ambiguous language?