And these corp landlords can choose to not rent any longer, let the property remain empty for the legal length of time and then start renting again at the new and more profitable higher rate.

I don’t know the laws in California, but isn’t there just a surplus of houses empty for this very reason? If you look at the numbers, they could be sitting on these houses and get low interest loans on the value, which earns higher invested interest elsewhere. Anyone squatting can get away with it because the company will just do the legal route and get more money from these people (even if it’s debt that just hangs over their heads for a while). The rich just keep getting richer…