What’s different about grandma and grandpa owning a condo and generating profit off of doing 0 work and a larger corporation doing it? It’s the same economic mechanism, and if you had replaced the single corporation that owned 5000 condos with 5000 grandpas who own one house each they’ll still be leeching off the tenants the same amount in total. The relation between capital and labor isn’t any different just because capital would in one case be owned by more or fewer people.