Ya it has to be. We have so many square miles of underutilized cheap land between the costs it's crazy. The federal government owns around 60-90% of the land in the western states too. If only there was a way to communicate without being face to face.
Yet for some reason tech giants insist on building more opulent, centralized megaoffices in unaffordable areas. Perhaps it is because they do not bear the brunt of these costs.
One reason is that the executives who make the decisions on office locations can easily afford to live nearby. And most of them prefer to live in fashionable areas.