> the reality already is that there is a massive move into the cities not the other way around

That's not what the data says, at least in the US. We consistently see a net change of about 2 million people per year moving out of cities and into the surrounding suburbs: https://www.pewresearch.org/fact-tank/2021/12/16/in-2020-few...

And the desire to live in cities is shrinking as well, now at under 20%: https://www.pewresearch.org/social-trends/2021/12/16/america...