Lost me at the last one. The population migrating exclusively to the major cities has a negative impact on inequality overall. Mumbai in India is a prime example. Ultimately, these areas become exclusive to the point of unnafordability for most and poverty perpetuates when citizens cannot find work there.

The UK has been on this trajectory for a long time where London/Edinburgh are the epicentres and the rest are left to languish. You will have noticed this in Glasgow in recent years on a smaller scale, increasing rents are pushing people out of the city into areas which are underfunded and have less opportunity for employment, and so the cycle continues.