To be clear--again (and again)--all bets are off if there is inadequate competition in markets. Rent seeking, price gouging, "double dipping" and all of that stuff is a bug found in uncompetitive markets. And the problem that gives rise to it is that lack of competition. And the way to exit inadequate competition is very often regulation. Sometimes the regulation that was originally intended to ensure competition fails to do so because special interests have distorted it, as often happens in the process of negotiating and legislating laws. This happened in the US, it also (as you have outlined already despite apparently disagreeing with me) in NZ. Happens everywhere. However--European union competition laws for the communications industry are--in my view--considerably more free of capture than many other countries.
Net neutrality avoids the issue of inadequate competition (which in the case of the US and several other places is borne of regulatory capture in the past) and attempts to deal with particular effects of it by writing new laws that compel monopolistic agents to behave a certain way, which would not actually be the optimal way for them to behave if there was adequate competition. So it leaves bad regulation (competition) in place and adds new regulation that is inferior to fixing that (two others have agreed with this so far). And without needing to adopt any right-wing canards of "all regulation is bad m'kay?" it is folly to declare that adding more and more clunky rules that address wrong issues and can themselves be captured is unambiguously the best solution here.