The thing Apple has going for it is that they already build a headquarters a long time ago, and also outgrew it a long time ago. Their employees are already used to working in buildings near but not in the headquarters, and being moved around in and out of the HQ campus.

Also, the new HQ is only a mile from the old one and they're going to keep the old one too.

So it's not the huge cultural shift of a new HQ -- it's more like just a new set of buildings.

It's true, they spent a lot of money making a nice new HQ, but not even 1/2 the employees will move into it.