>>12,13
You've just describe pro-national corporate espionage, even the most subtle kind that is lowering the price to do business. Congratulations. You still haven't demonstrated or exemplified anything concrete save your ability to argue in circles, preserving the semblances of a position.
That, I think, is a major problem with the position. Pointing out Jewish people here and there doesn't prove anything to a person not convinced by your position in the first place. I could point out random non-my-nationality people elsewhere too, in places of authority, in places where authority is a "joke," and in respectable places. It's a mirage - it's something only the person with that kind of position can find somehow offensive. For the rest of us, diversity of workforce is a mater of life and for everyone at the top you can gripe about (because of their heritage) someone could potentially draw attention to any number of people (of the said heritage) who are not in that position of authority.
There's also your rampant "collective think" issue. Rather than deal with individual people, your argument only works if you denounce the whole of the target base as possessing a single, neglectful or malevolent, mindset. The moment you start thinking that there are good people and bad people, studious people and lazy people, your argument accepts crutches and part of it moves towards an irrationality.