I'm not a libertarian by any means but I do have some amount of faith that if what you're describing comes to pass, the free market will provide alternatives, if demand exists. VPNs are one such alternative.
I truly believe that it's harmful to society to guarantee free reach to everyone. It's kind of like the paradox of tolerance, if you've heard of that -- if private entities are barred from moderating content on their systems, the discourse will devolve more than it already has into conspiracy, hate, and other forms of unwanted content.