There are examples of entire subdivisions being built to order for private investors to rent out. It’s called “built to rent.”

https://www.nar.realtor/magazine/real-estate-news/commercial...

Corporate ownership mapped:

https://www.lincolninst.edu/publications/other/who-owns-amer...

https://storage.pardot.com/153411/17634993251KmjZ4d2/whoa_ma...