It sounds like the landlord is hiring someone else to actually do the work, and then charging the renter enough to cover the property manager and profit the landlord. In which case, the landlord is doing exactly nothing to earn that money.
They bought the property. That’s all they have to do. “Sorry, but all you’ve done is build up enough of a credit score, income, and down payment to get a loan for this property. You’re not living in the house or maintaining it, so why do you even get to own it. Please turn yourself into a charity and operate as a not for profit.”
If they want to barely profit off the property by leveraging a property management business, who the fuck cares.
If rent is too high, then the government should put controls in place. But this idea that property owners should be operating as charities is absurd.