In the early days, in addition to the "Internet" you had a whole host of private networks. AOL, Compuserve, Prodigy, among others including a whole host of BBSs. These were not part of the Internet. They eventually provided Internet gateways but doing that doesn't mean that they automatically gave up their autonomy and were now part of the Internet itself. So, I what's to stop Comcast, VeriZon, AT&T from simply saying that they are not providing an internet service but they are allowing connection to their private network as well as an Internet gateway and as part of that, they'll prioritize traffic on their network as they see fit (and process "Internet" traffic on a neutral basis.) ?
Function reject.