You have to look at this from the standpoint of Rail Roads back and the resulting mess that came from the Interstate Commerce Act of 1887. It took decades if not a century to realize how regulating transport versus producers did not help anyone, resulted in sub standard services and little advancement. Why? Because once codified it is damn hard to move. Net Neutrality is going to require detailed pricing regulations, routing, bandwidth, and more. You can guarantee once those exist they companies will see no need to expand on it.

So why should we not be overly concerned. Because in a system some perceive as unfair others perceive an opportunity. We are going to trap ourselves into a realm of where any attempt to offer more services will be met with legal shenanigans locking out competition and preventing even the established groups from expanding. It will become yet another industry wholly under the control of groups paid to solicit politicians endlessly. (more K street). We won't have the equivalent of AirBnB, Lyft, and Uber, companies trying to offer a better internet experience because regulation will stifle it and protect a status quo