This. Considering the only options for a "city" are San Francisco, San Jose and Oakland, Apple has quite literally no chance of snapping up that much raw square

This. Considering the only options for a "city" are San Francisco, San Jose and Oakland, Apple has quite literally no chance of snapping up that much raw square footage without moving out into the more suburban areas of the valley. Even if they were able to purchase and lease literally every high-rise building in, say, downtown San Jose, they would not come close to this pure amount of real estate.