"Information Service Provider" vs Common Carrier
When I signed up for Comcast, they made clear (in the fine print of the Service Agreement) that they were operating as an Information Service Provider rather than a Common Carrier. The difference being that they claimed (rightly or wrongly is open to debate) that they were providing me information, not carrying my packets. They also claim that I can't deliver the information "they" provide me to anyone else, and that they retain the right to do pretty much anything they want. It's written more like a cable tTV contract than an internet connection contract.
Were they operating as a Common Carrier, they'd be obligated to carry whatever packets I sent and to deliver whatever packets were sent to me. And this requirement would be enforced, just as it is for wireline telephone companies, of which Verizon is one (although they are trying very hard to get rid of the "wireline" part right now).
The problem with ISPs, IMHO, is that they are generally not considered Common Carriers, that they claim to provide some additional value. This, too, is open to debate. Basically, yes, their suits have won and gotten themselves classified so they can have fewer regulations and make more money with less oversight. I guess that seems fair, if you're Comcast or Verizon, but maybe not so fair if you're one of their customers...