Yes, they use the money in order to maintain the house. Furthermore owner-occupancy is a thing, where the landlord does some maintenance themselves.
However no matter what, no landlord can maintain all aspects of the house alone. You think a single person can be a master of all trades and have all equipment on hand all of the time in an apartment, for instance?
Why does it even matter if someone pays others to maintain the house? Do you think there are people who build modern houses alone with no machinery?
Because homes are overpriced, because they're treated as capital instead of a durable good & because all financial / building policy advantages existing homeowners
However no matter what, no landlord can maintain all aspects of the house alone. You think a single person can be a master of all trades and have all equipment on hand all of the time in an apartment, for instance?
Why does it even matter if someone pays others to maintain the house? Do you think there are people who build modern houses alone with no machinery?