Obviously the Future: Citizens vote with their feet.
Since leaving Minnesota, I have spent meaningful time living in North Carolina, California, Nigeria, Pakistan, London, New York, and Washington state. That would not have been possible two generations ago and yet has been increasingly common for an increasingly large pool of mobile individuals from around the world who are able to relocate for a host of reasons and continue to do so in large numbers.
Yet even this relatively recent phenomenon is changing once again. As the standard of living across the developing world continues to climb and the Internet enables individuals to live, learn, and work from almost anywhere, migration of commerce (and the associated opportunities and people who seek them) may shift as well, redistributing from the several urban megapolis that have concentrated wealth and talent into a broader set of cities. How localities compete for citizens - in the same way many have competed for business in recent decades, exemplified by the fervor surrounding Amazon's search for HQ2 - may differentiate the places that "win" and shape the rest of the 21st Century.
Choice is all around us. In a free society, everyone makes choices. Everyone likes being able to choose the life they want to live. Where to call home. What community norms to ascribe to. Where to educate your kids.
The wealthier you are, the more choice you have. You can choose to send your children to a private school. You can choose to see a doctor that doesn't take insurance. You can decide to get a second opinion. Wealth can mean that you don't have to play by the constraints of any particular government and its rules.
When people don't like the choices they are given or don't feel they are being honored - they choose to take to the streets or to leave. And protesting and leaving they are.
I have written this argument out in full, but for reasons I don't understand Mailchimp keeps cutting it off. So if you want to read it please use the link here.