The problem with this is you aren't really explaining why there needs to be a rule. Which is actually the biggest problem with getting net neutrality implemented. It's sort of a solution in search of a problem.

There hasn't been many largescale violations of it even when violations were legal.

Comcast blocking bittorrent is the only clearly bad example of a net neutrality violation I can think of. AT&T zero rating DirecTV streaming is the second but a lot of consumers see free and don't care.