I spent the last few years shifting my life from New England to Taiwan.
Might sound odd move since Taiwan shows up as the "most dangerous place on Earth" on the front page of the Economist, and NE is considered developed. But Taiwanese society is the most functional one I know. 99.9% of all of the chips for mining ASICS are made here. It's fact that the hardest working, most punctual people in the world live in Asia.
I think the biggest barrier is cultural integration. "Digital Nomads" tend to create their own third cultures in the communities the congregate in, like Portugal, or Bali. Heck even Bitcoin Beach is a culture unto itself. Today's "March Regions" tend not to be on the adjacent borders of superpowers. They're not like the southern alps during the renaissance where, ok maybe the French are in charge, maybe the Italians are, our languages are both romance and we're all catholic. The March regions are disparate. They're deep inside foreign spheres of influence. Check out nomadlist.com.
Unless they're willing to do heavy cultural investment, most movers, even if they have the capacity for sovereignty, have to wait for that third culture to establish before they're comfortable making a move. Most people are followers.
It's a paradox in my view that the people that are most eligible for individual sovereignty still tend to stick to the cultures they're most familiar with despite the freedom to do otherwise. Europeans want to migrate to Canada 😆.
In my experience the most vocal sovereign individual types (looking at you free staters) tend to be the least tolerant to foreign cultural mores, nevermind adopting or integrating them into one's own life.