I didn't take what Kerry said as anything more than a fair observation; the general trend seems to be that time passed correlates positively with an increase in social mobility. The world is more connected than it ever has been before. Facebook, Twitter, Whatsapp, smartphones, cheap international calls, integrated trade, globalised economics, cheap international flights, satellites, GPS, global militarization, international inter-agency intelligence, increased lifespans, larger populations. Eventually, if the trends continue, the concept of isolated countries will become more and more obtuse. Anarchosyndicalism or global social-capitalism are the next step in human economics. It's already happening: with the advent of more advanced robotics, artificial intelligence, 3D printing, and quantum computing, it wont be long before many corporations -- particularly in electronics -- are run almost entirely without the need for human workers. By that stage, universal basic income and leisure-lives will become the norm. The only thing we have to choose is whether the poorer countries get to join in on this fantastic lifestyle as equals, or whether we continue to let ourselves ostracize and hate on foreigners. The future will look one of two ways depending on the decision.
Either humans will be born into a fair, free and equal global society or some of us will have that life in certain countries while the rest will be damned to become economic slaves for our benefit.