I don't remember, but the FCC has always had limited regulations and has unofficially punished ISPs. Verizon sued the FCC for this overreach and won. The idea behind Net Neutrality is to list ISPs as common carriers, the same laws applied to telephone companies. This allows your phone calls to be uninterrupted no matter who you call.
Comcast is like a restaurant that charges $10 for a meal and an extra $5 because they didn't like the way you chewed your food. As long as I'm under my data limit, I should always get the speed I paid for.