> Do other people say hi to every single person you see in the building every day?
Yeah, pretty much.
Yeah, pretty much.
So, sometimes, yeah.
I would argue that this has just nothing to do with poor/rich or where you work.
Perhaps its just random how your work environment or your collegues are.
I generally say hi to everyone as well, especially if I've made eye contact. At the very least, some kind of acknowledgement.