moving is not just a reversion to the mean. A neighborhood is more than atomized individuals who live there. There can be a community of people which form a network and a support system that is many years old. Pricing certain people out can rip apart these communities, so it's not just a matter of relocating then continuing as you were.

Then there are the individual-level logistical problems. What does moving do to your commute? Is it easy to find a new job? Will your kids have to go to a different school district?