Earlier quoted context omitted.
How do you renegotiate? It seems like you need to be willing to walk to have any negotiating leverage, and moving is a pain in the ass.
Finding desirable tenants can sometimes be a pain in the ass too. But being willing to walk away is, of course, the best negotiating position.
Even when we lived in SF, where negotiations were almost impossible as they would have filled the unit within a week, they still were willing to do something in order to retain us.