What was wrong with the internet before NN was put in place? Answer: Nothing Second Answer: We don't need government involved.
There were always rules before this existed under Title I. As each Title I designation was given, so too were they later taken away... they attempted voluntary principles from 2004 through 2014, which were ignored, and we ended up with selective throttling of services -- ie, Comcast slowing down Netflix unless they paid up and outright blocking BitTorrent; ISPs blocking VOIP. Each time the FCC succeeded in ending them - this time with the Open Internet Order of 2010, the appeal lawsuit resulted in a re-establishment of these policies, culminating with Verizon v FCC -- which the ruling was quite clear; there could be no net neutrality unless the ISPs were labeled as 'common carriers' under Title II.
So to remedy this, Title II was introduced to keep them in place.
In other words... we do need government involved because when it wasn't there, we got screwed.