ISPs have shown increasing comfort with delisting sites they deem bad. I'm a huge proponent of commoditizing data hosting, but the culture today leans heavily toward "filtering" information.
It's not really culture. It's a small minority of radical extremists who get their own way repeatedly by threatening meltdowns out of all proportion to the severity of the problem, and emotionally manipulating their own managers ("you're a bad person if you don't do this"). And they do it again and again, until the organization starts to collapse and becomes a mere tool for their political agendas.
The best way to push back on this is not some p2p techno fix. It's to systematically start firing anyone in an organization who demands the moral cleansing of customers or colleagues.
ISP Censorship is next on their list… They are going to push normal discorse underground and bad ideas will just fester instead of being natually filtered out in the proving grounds of public discorse.