Define privacy. American-style stalls don't permit very much privacy, though in any event "private" is in the mind of the person. That's what makes it interesting--a person's feeling of privacy mediates a very basic physiological function.

Wow! Talk about an open office! But as anecdata my wife avoids pooping at work or at public toilets, so saves it up for home, whereas I will just go if I need to and there is a non-disgusting toilet available.