And if you're visiting from another building (a common occurrence) it's very very frowned upon to camp out in a conference room, so you head over to the cafe or you sit back in a giant "e" in the hallway and you open up your laptop and you get to work.
I am, however, skeptical of the people who bring their laptops to work out of massage chairs. I like massage chairs, but they are way too distracting.
Also, multiple monitors are useful, but there are some programming tasks (like implementing an algorithm and writing some unit tests) where a laptop is fine.
The idea is: you can choose. (If you want a couch at your desk, nobody is stopping you. And electronically-controlled height-adjustable desks are standard equipment, so if you want to work at your desk but alternate between standing and sit, you can. It's wonderful.)