I have a hard time imaging the people are willingly sacrificing theirs and their kids' futures for no reason. It's hard to up and move somewhere without adequate savings, a family or friends network. What kind of landlord is going to rent to someone with no job? Will someone in that situation be able to get a job that even allows them to save up for a home purchase in an economically burgeoning area? Or will they always be treading water?
people have always had that mobility though; there's nothing special about the current US job market. want to become the king in a feudal society? just raise an army and take over