There's also health effects. There is subconscious anxiety from being observed and from having someone walking behind you. There is stress from trying to listen--or not to listen--to other conversations. There is stress from needing to maintain a facade for management's panopticon. It all takes a toll on cube farm crops.
Cube farm is nowadays a premium. We are just sitting in rows. Like school class. No walls, nothing. Managers sit in corners, so they can observe others. Upper management has private offices. With increasing pay office quality drops dramatically.
About 8 years ago I changed jobs and went from a big semi-open office space to my own cubicle in a small department of a smaller building. I was so happy about that, I had to take a picture and send it to some people.