Its not that its 'more profitable', it is that it 'is profitable' (enough). And, its not only profitbale enough, but it creates a lock-in (people wont move/give

Its not that its 'more profitable', it is that it 'is profitable' (enough). And, its not only profitbale enough, but it creates a lock-in (people wont move/give up their space) wich reduces turnover. The ideal position for a landlord is protiable tenants that don't turnover. That's why there is more inertia in the system than seems at first blush to be likely.