If I understand your argument, absent net neutrality, ISPs would be allowed to charge a premium to certain content providers and theoretically they wo9uld reduce pricing for certain types of consumers/users. In a word and based on their track records, I will never trust an ISP to do the right thing. They are monopolies in my view.
The problem I see is that in too many markets, ISP competition is none existent or prices are fixed between competitors.
Some years back, Pennsylvania passed legislation that allowed consumers to select their 'electricity' suppliers from anywhere in the U.S. That was and it remains one of the best pro-consumer pieces of legislation passed by any state IMHO. The same needs to be done with ISPs, i.e., separate ISP service from ISP infrastructure and allow any ISP to sell its service in any market. This is feasible but it will take state legislatures doing the right thing on behalf of consumers.
So, you would use force of law, or regulation backed by law, to compel an access provider allow any alternative provider to offer for-profit services over the infrastructure they invested $billions in? At a marginal, set return rate?
That’s what socialists do.