In order for there to be any rental property at all, someone has to own it and be the landlord. Unless they think it should be the state. Or unless they think that everyone should always own the property where they live.
I didn't think there is much of a logical argument for having no landlords whatsoever.
Who owns a hotel? Isn't that just another type of landlord?
So, if musk does become speaker of the house, he also is 3rd in the line of succession.