The flips side can be pretty dark too. For example, there are are plenty of stories of poorer communities, especially African American tenant ones, being broken up and priced out by gentrification of rental markets.
Ownership is less economically efficient, but much more resilient. Once a mortgage is paid off, you've always got a roof overhead. You just need to earn enough for food, clothing, and medicine.
I think the trick would be to implement significant differences in land tax based on:
* a home you live in; versus
* an individual investment property (e.g. if you own 2-3 homes); versus
* an institutional investment property (e.g. investment fund owns hundreds of homes)