These items are so trivial and so obviously cause consumers angst by being missing that I can only presume the near universal lack of them is an intentional plo

These items are so trivial and so obviously cause consumers angst by being missing that I can only presume the near universal lack of them is an intentional ploy to train people to be used to being on camera so that various additional invasive techno-gadgets can be introduced over time. A "market" would have produced "choice" but we have to stick with tape. It was extremely obvious what they were doing when Google Glass was released without even a glowing video indicator.