One thing though: I think many cities as you say are now overpriced. Even with all the qualities of expensive cities like London, you get very little for what you pay for. That means there's an (economic) information lag where many people don't realize this yet. I hope my site helps reduce that information lag.
I think cities attracting people will happen organically as it's mostly always has been. People go to cheaper/better places to save money, then those places develop, get expensive/crowded etc.
In terms of non-organic ways of attracting people, I know governments in Spain, Ireland, France, Georgia, South Korea, Thailand, Taiwan, Indonesia and a few more countries where ministries (eg of tourism) are actively aware of remote work, nomads and wanting to attract them.
The challenge is that the things remote workers are attracted by in a city are either fixed (weather) or slow to change (internet speeds, infrastructure, safety).
Places that have become hotspots for nomads like Chiang Mai and Bali mostly did because they already had a giant tourism industry and supply of (cheap) accomodation, were relatively safe and had usable internet. It "happened" to them, not the other way around.