I don't believe the free market is the solution to everything, but in this case the market already solve this. As suburbs age and become crowded people move fur

I don't believe the free market is the solution to everything, but in this case the market already solve this. As suburbs age and become crowded people move further out, or back into the urban core. If a particular local government jurisdiction doesn't have enough revenue to maintain or expand roads, schools, water and sewer service, it will try to annex more land, or change its zoning and offer incentives stimulate higher-revenue uses than residential. If the concern is about agricultural or forest land being taken for development, perhaps our economic system doesn't sufficiently reward those land uses (yet).