Maybe some, but I'd be really surprised if you get substantial numbers of your top people to move - which effectively blocks the overall team moving.
A Google Staff engineer makes $400k+. On such a salary, the high cost of living in the Bay Area really isn't a problem; sure in Kansas you could afford a mansion on that salary, but a lot of folks (myself included) prefer "paying" for the Bay Area's weather, scenery, and culture over larger living.