When you have good and competent politicians yes it does 'magically' make most or even nearly all the negative effects of greed in the form of white collar crime go away.For some reason people seem to think greed magically goes away when you bring government into the mix.
History has shown lassez faire/anarchic economies/governments result in the average citizen having generally a poor quality of life and/or significantly shortened lifespan so your preference is irrational + disliked by a overwhelming majority.I just prefer greed to have no authority.
Once they're regulated as a utility lots of the current BS the ISPs do like degrading service quality for streaming services, not upgrading equipment in rural areas, and overcharging become illegal and they can be forced to fix those issues or else the execs can get booted or even put in prison.You turn internet into a simple toll operator business, a company will be more than happy to comply with the regulation now that all their competitors vanished.
White collar criminals are deathly afraid of prison so a real threat of prison time + the associated wealth confiscation is very effective at curbing their excesses.
Also it should be noted that the ISP's generally already have regional monopolies or oligopolies so competition is already nonexistent or, at best, minimal.