The answer, of course, is that these people should build their own cities. But first, of course, they'll just have to build their own websites, servers, datacentres, ISPs, and nations.
(And militaries, to stop USGOV from killing them all, presuming they dare challenge the banks by building alternatives to traditional payment processors.)
Yeah! I’m proposing building systems on top of Reddit and Hacker News (just two examples, any forum really that serves its data as http) to backfill their content and discussion data (comments), and prevent global censorship by mod actions. If you can’t censor The Pirate Bay and SciHub, you’d expect such a system to be equally durable. It’s all JSON blobs, identifies, and endpoints.
These sites are temporary (remember Digg?), so you want to build discussion systems that are durable, prevent censorship, and will outlive their underlying websites they sit on top of. These are not unreasonable amounts of data we’re dealing with, it’s mostly compressible text. I can store 100TB in Backblaze for $500/month, and front it from VMs around the world.