Thank you for bringing up a demographic equilibrium. Most writers and planners, when alluding to a \”great inversion,\” skip that completely. They leave out that it's possible we could have a brief era where many cities and suburbs feel a lot like each other–at least in terms of who lives there. Some metros may already be there. That's a great social opportunity, and thus a great policy opportunity, to work on things like regional cooperation, which has often eluded us. It also hints at us becoming a more integrated nation, at least within metro areas (probably not small towns and rural areas), and that would be something to latch onto if it happens. Many days that feels so far from reality, unfortunately, but it really does depend on where you live and work, and whom you interact with.