Imagine Russians who got rejected when fleeing to other countries. Wouldn't they go in free city where they could continue live and work? It would mean an opportunity for free cities to out-compete national states while providing valuable services.  

I didn't quite get that, what has war in Europe to do with free cities?

If balkanization/fragmentation occurs to nation states I see the possibility of free cities emerging as quite natural. And as Bitcoin is a tool that reduces the size of the state I think it's a likely outcome. Long term of course.

Tenuki

Yes. But now we have a big war in Europe and refugees on both ends and this concept somewhat fails to address current situation which would mean that Free cities/Citadels aren't livable. Good idea though but... I could believe that El Salvador may become "a Citadel" but there is a lot going wrong right now. 

notgeld

bitcoin

BTC Citadels: wishful thinking OR real promise? 

muteness11

I think the concept of free private cities is quite interesting and appealing! https://free-cities.org/