"Has become?" Seems that being a landlord has always been one of the more profitable things you could do. And it has always been an odd split of who you want

"Has become?" Seems that being a landlord has always been one of the more profitable things you could do. And it has always been an odd split of who you want as tenants. Commonly, you either wanted very poor, or commercial tenants. Middle class was not desired. For the middle class, you wanted to be their bank.