This also might open many landlords eyes to how ugly their situations can get when they want to remove a tenant in Oakland/SF/Berkeley even if a tenant stops paying rent. I have two friends who are currently refusing to leave in-law units and it is quickly getting bad for their landlords ($30k deal to get one of them to leave).
That said I totally welcome this, part of the reason why our communities suck in the bay area is because everyone is renting. Owners have a vested interest in creating a nice place to live while landlords and renters have less reasons to care.