Presumably if one owned many homes and rented them out they might benefit from increased renting demand. Though the resale value of the house might also go down

Presumably if one owned many homes and rented them out they might benefit from increased renting demand. Though the resale value of the house might also go down with less people buying so Idk if it balances out. My perception from London is that resale prices continues to go up even if most people rent but Idk if that's accurate or generalizable.