CEO Anne-Marie Slaughter was just in the On-Point podcast saying the same thing (in context to work-life balance and family), that we have a bias for thinking the person who comes in at 6am and leaves at 6pm is a good worker.
This bleeds over into decisions that affects other aspects such as telecommuting, paternity leave, etc.
That sounds funny, but when you put this together with the known increasing costs of supporting suburban infrastructure, it's possible that that whole style of life will be outcompeted and put out of business in most places.