No, hoarding is accumulating for the sake of accumulating. A housing provider offers a service, 12 month leases on places to live temporarily. It is a cutthroat low margin business, very few people are truly getting rich being small time providers, most are just breaking even and banking on their asset appreciation.
It is a “service” that is way cheaper than owning a home, not everyone wants to be a homeowner and pay massive maintenance costs. That burden is handled by the provider.
Why is it cheaper than owning a home? Because landlords are driving up the price of homes by using an essential human right as speculative asset and investment class.
The burden is imposed by the "provider", as a result of their greed.