What if we could select our country?

Is there a future, say 500 years from now, where we would select which country we associate ourselves with?  I could be a Norwegian while my neighbor was a Liberian all with a simple selection on our annual tax form.  I would get all the benefits of a Norwegian while paying 60%+ tax.  Countries would offer incentives to entice virtual immigrants.  Individuals could weigh the benefits of each countries economic and social policies to meet their own unique needs.  New landless countries would emerge sponsored by brands like “Walmartopia”.  What an interesting dynamic might emerge.