I don't think that is generally people's concern. What people in bigger cities would want from smaller cities are things that are significantly better to offset

I don't think that is generally people's concern. What people in bigger cities would want from smaller cities are things that are significantly better to offset the lesser verity and upside. If you to a large degree still have to deal with commuting, the housing market, education and health care (or whatever) it doesn't really do that. If these cities want to be competitive they have be attractive in their own right, not relative to a bigger city.