I meant the US and Europe. And by extension places of that nature. Slower growing aging populations and the realization that low density single family both burdens local government with costly infrastructure that generates low revenue. Like a sewer main with 100 customers per mile. Only sustainable when growing fast.
There is a lot of multifamily being built despite fairly intense NIMBYism. And despite that you're seeing cities getting rid of R1 zoning.
There is no fundamental reason for urban sprawl to stop. Western living standards and wealth are increasing, and the actual material costs of laying a sewer pipe or road become negligible.
With the advent of electric self driving cars, transportation becomes cheap and hassle free. A network of highways converging to an urban center served by Boring co Loop tunnels can gather trafic from a 30 mile area. As long as travel times are less than say, around 45 minutes, those people will be living "in the city".
A 30 mile radius means about 7 million plots of 10000 sq feet, so you could accommodate more than 20 million inhabitants in this suburbopolis of single detached family homes.
The factors preventing it are land prices, regulatory pressure and homebuyer tastes.
There is a lot of multifamily being built despite fairly intense NIMBYism. And despite that you're seeing cities getting rid of R1 zoning.