This the only answer if we being real.
Not really though....whats the plan with that? You can't just walk up and buy a whole block of houses, this ain't Monopoly.
You gonna go up to home owners and offer to buy their houses? If they flat out own the house then they get some cash and then what? They move or rent from you now?
If they still have a mortgage and not a lot of equity, all that money just goes to the bank and now they rent from you?
Are you buying dilapidated abandoned homes and renovating? Are you gonna become a section 8 vendor and rent? Or you gonna sell these houses at a huge loss? They still need to get loans at the end of the day.