Very few goods are purely digital, and for everything else you can still legislate participation in a system. You saw this happen on the internet, you'll see it

Very few goods are purely digital, and for everything else you can still legislate participation in a system. You saw this happen on the internet, you'll see it happen in other distributed systems. You can't build an ancap dream non-state on top of an actual state. This is the same problem with blockchains finding actual use-cases. Tamper-proof decentralized structures are useless if they're not enforced, and if you need enforcement you likely have a much more nimble solution in place already that is good enough in the few properties blockchains excel in.