Fifty-acre parcels are generally not that available in...

Fifty-acre parcels are generally not that available in Silicon Valley. You can't buy 50 acres, you have to piece it together. So if you're Apple and you're going to go through the trouble of putting it together, you might as well pick an area you want to stay in, as opposed to one further away where you might save money but it will be just as difficult to assemble.