The distinction is in the role of being the owner of the property versus the property manager and superintendent.
Landlords that also assume the role of property manager or superintendent for the land or buildings they lease do work.
But their role as owner and collector of rent is divorced from upkeep. The wealthier the landlord, the more removed and absentee they can be from their property. And the reality of that specific dynamic is just shining in the example of this kind of party.