A wild guess: execs supplement their income by having stakes in food/rent businesses around the HQ offices. If employees don't come, those businesses will lose customers and the execs will suffer. I mean, if you were such an exec and knew the corp is about to build a large office somewhere, wouldn't you buy 40-60% stakes in key businesses there while they are cheap? And wouldn't you cry wolf if the new office never opened beyond 10% capacity? I've seen a few strange apartment complexes built in odd places and charging brazen rent that doesn't make sense unless the owners knew something years ahead.