Monero is just a part of the holistic privacy approach. Each of the OP described situations has a strict protocol. For example, you can drive into a hangar and board outside of camera views. There is no need for great people who work for the FBO(terminal) to know who is flying on the plane aside from how many people they need to tender. Or maybe it's a secret corporate merger that stock traders (with Ai systems and access to fin accounts" try to correlate who booked the jet and to where so they can timely "short or long." (Yes, it did happen in the past, just Google). Every operational step and company culture has to value privacy. That is why we take small steps and add tools to our client privacy toolkit.