The No Borders belief is very idealistic. How does that work with state benefits like universal healthcare? And taxes? Yes it would be nice to be able to pick up and live/work anywhere but it's not as simple as one might think.
It's all just random chance and it seems very unfair to me that being citizen of a first world nation affords you a good quality of life, while someone born somewhere else has bombs going off outside and isn't allowed to leave.
Imagine being trapped in a horrible situation with no freedom to escape.
It's not right. Nation states are anachronistic at best.
The same way family houses are geographical. Because the people in them live on some place, cater for it, historically inherit it, and do as they please inside their own premises.
Nations are groups of people who grew in the same area, had gone through the same historical experiences (e.g. attacks, famines, wars, etc), worked together to make their place better, and built their culture and cultivated their ways of life over centuries, often making heavy sacrifices to free and keep their land...
>Corporations are not bound by borders
Corporations also don't belong to their "citizens" (employees) but to the few owners/shareholders, are not bound by democracy (they are despotic kingdoms internally), and only care for profit, and would "exile" (fire) any number of their "citizens" (employees) if the profits said so. So not the best example to base social paradigms on...
>It's not right. Nation states are anachronistic at best.
According to most scholars, the nation state is a product of enlightenment and modernity.
We had empires before.
And federal like unions, are just nation states minus the political autonomy (sovereignty), so decisions are made by some bureaucrats away from where it matters.
If you look at the people who are traped like that, it's because their nation state failed.
They mostly want to migrate to places with strong nations states, why do you think that is ?
It's because strong nation states, can create good living conditions.
That said that doesn't mean many of us couldn't take a lot more immigrants than we currently do.
People tend to forget, the only guarantee that you are born with is that one day you will die.
Every other privilege, right or whatever you want to call it was fought for (often quite bloody ) and build by societies, and nation states are latest iteration of societies.
Is that fair? No. But that is life.
It would presumably work like it does in the EU presently - a agreement to provide care for any EU citizen reciprocally regardless of which country they reside in, with some very basic residency requirements to cut down on health tourism (3-6mo residency normally).