Correct me if I'm wrong, but wasn't this Sprint's major competitive advantage from a marketing standpoint? This specifically focuses on mobile devices besides

Correct me if I'm wrong, but wasn't this Sprint's major competitive advantage from a marketing standpoint? This specifically focuses on mobile devices besides phones (tablets, netbooks, mobile hotspots, etc) but it does appear to have a clause with respect to tethering as well. I'm assuming it won't be very long until they apply the same restrictions to their mobile offerings.