From my exposure to enterprise users, they are usually the sort of environment where hundreds, if not thousands, of employees work. Can you imagine how one "angry" of UI changes person in a team of a dozen scales set against that? With open-source users, it's more decentralised IMHO.

When I read your questions, I immediately though: Enterprise users need processes. Processes goes by documentation. If you have to change your documentation once every 6 months because the blue button on the bottom left is now yellow on the top right...