I don't think that statement that most of the employees either live in SF or want to is necessarily true and may only be true if you think of those under 30 or

I don't think that statement that most of the employees either live in SF or want to is necessarily true and may only be true if you think of those under 30 or are recent college grads. Many folks want to own a home or raise a family outside of the city since it's very cost prohibitive to own or rent in San Francisco. The argument against South San Francisco is that if you're going to build to be closer to San Francisco, then you should make it easily accessible to SF employees. That means it should be a MUNI ride away so you can get to it from anywhere in the city otherwise you're going to either have to drive or deal with a multi-transfer commute. I would suggest the DogPatch or Mission Bay given the access to CalTrain (as a connector to Mountain View HQ) and the availability of large swaths of warehouses or vacant land.