No, an 18-wheeler pays more because they are more cargo, wheels, surface contact, emission, etc.... But they also are paying closer to the same rate as cars on a Per-Wheel basis. Same as net-neutral laws. Netflix pays their ISP's per GB of bandwidth, so do users and every other connection. There might be some bulk-rate discount applied, as I'm sure 18-wheelers don't always pay exactly 4.5x a 4-wheel car, but to charge Netflix more per GB (which is what AT&T is going for) absolutely IS unfair. Also, if users are using Netflix and "hogging" all their bandwidth for video streaming and don't have any bandwidth left to use on another service or, gasp, torrents... Then they aren't using any more bandwidth than they were when they were downloading torrents.