The entire project makes perfect sense. Modern companies want to be located near amenities like quality restaurants and housing. Add in retail, a hotel, movie theater, luxury gym, and various parks... well you have the ultimate destination for a corporate headquarters. The only thing missing is mass transit, and that should come very soon when a bus rapid transit (BRT) line is built from Downtown San Jose to Stevens Creek.
To add the the good news, the ginormous parking lot around Century Theaters across the street may one day be developed into a project at the same level of density as Santana Row.