This article explains how increasing living costs have in turn increased migration from expensive areas to more affordable areas. This is particularly true in case of metropolitan areas where increasing housing costs are behind moves. If you want some actual research data, check this census report.
I see this very concretely in my life. Helsinki is the only real metropolitan area (Helsinki metropolitan area is far from its international counterparts) in Finland and especially housing prices are far above rest of the country. With a price of three-bedroom apartment in Helsinki, one can get a house of 5 bedrooms and a big yard. Goodies do not end here because at countryside one has bit longer commuting trips, but there is practically no traffic so one gets to work and back in less time than in metropolitan area.
Metropolitan areas have very strict building codes and it is almost impossible to get permission for a log home. Outside metropolis it is easier to get approval for even most rustic log homes and log cabins, therefore further increasing the quality of life. Where would you like to live?