My company recently built out a schmancy new open plan office and moved a bunch of people from my team there. Based on what I've seen so far the answer is that people don't work in that office. They work from home, because that's the only place you can get any actual work done. They do come into the office one or two days a week, but only so that management doesn't feel like they wasted money on all those ping-pong and pool tables.