Humans with dual nationality already do this; I'm only extending the property to every human and country. In my humble opinion, this would make a lot of countries reconsider the well-being of their citizens (after all, they could just leave otherwise). Countries do not need to change their government systems at all, but remember: you would be on your own. Language, jobs, and everything else is on you. Just the immigration and required documentation are free. 🐾