The trouble is that as soon as government gets involved in regulating this kind of thing there are usually all sorts of side effects.
At one level net neutrality, in the sense that the net should be neutral and regard all packets as being equal, fundamentally fails. Voice and video traffic needs to be prioritised over text traffic, or voice and video stop working. It's fairly basic quality-of-service stuff - if you send an email and all the packets get jumbled up, as long as they can be strung together again in the right order when they arrive it doesn't matter. If that happens with voice or video the whole thing breaks - the packets need to arrive in sufficiently close to the right order to be able to process them usefully.
At another level, the idea that Comcast shouldn't be able to prioritise its own video streaming service over Amazon Prime or Netflix or Hulu or whatever else, in principle it's a laudable aim but still falls flat sooner or later. Is there a reason why people shouldn't be able to pay more to mark their content as being more important than the endless cat videos circulating around the internet? If you're trying to watch an instructional video to learn something, perhaps you'd appreciate the option to pay to get a bit of extra bandwidth rather than the net regarding your packets as being no more and no less useful than the video of a cat chasing a laser pointer the person next door is watching. Conversely, if you were producing educational videos perhaps you'd appreciate the chance to pay a little extra to mark your packets as being higher priority, even if only so you could offer a premium service to your subscribers.
Personally I tend to be very wary when governments start getting too heavily involved in regulation under the guise of protecting customers. To take the situation right now, would you want a Trump-led administration to have the power to decide what counts as "fake news" and stop it from propagating across the internet? You know, to protect customers from fake news. Having seen a few instances where regulation that was supposed to protect customers did the exact opposite I'd want reassurance that the government getting involved in regulating the internet wasn't going to become yet another one.
