So long as companies pay proportionally less when you work from a lower cost-of-living place, as most seem to do, it's not going to become especially popular to work from a cheaper location. And why should they -- being able to work remotely is something workers want, and companies have the perfect information of your permanent address; supply and demand dictates companies will continue to be able to get away with this kind of policy. If it works the other way around, and companies will pay more when you move to a more expensive area, I expect California to become _more_ popular, not less.