I think the nation state, as we know it, will change as cryptocurrency gains widespread adoption.

The government has always been an intermediary for the citizens of a nation, but crypto allows for peer-to-peer transactions, excluding the state from visibility and control of the economy. I think new governing structures will arise, where "taxes", funding, and voting all occur on decentralized blockchains, forming new decentralized government-like structures.

Anyways, interesting times ahead.