Most of those 4/10 already have their hands on the OS and are testing it. Many large corporations are given prerelease versions for application testing prior to the street release date. If any of them were going live on day 1 with no testing that would be insane, but i bet most will have been testing extensively prior to october.

This violates civil liberties in so many ways.

The chance may be very small, but if I share 1/4 of the markers with a suspect (as a sibling would) then I have to deal with hassle of being questioned by the feds. It's profiling. You can't pull over everyone driving a lexus in a low income neighborhood looking for stolen cars and you can't question everyone who has a given number of repeats at a certain locus in hopes of finding a criminal.

As with most condo associations, it would be great till the little old lady down the street wants to rip the whole thing out and go back to token ring. Everyone would laugh at her and call her stupid and then she would sue the association for bias against a minority in the group.

Laws governing these associations don't allow them to be pure democracies. It's very easy for one or a few disgruntled individuals to cause major headaches for the majority even if the majority is working in the best interest of the collective.

Knowing what your current company is not doing is also a trade secret. If you gain an advantage because you know of things they are not doing or what the limitations of their code is then you are also liable for IP infringement as long as they can prove the only way you could know this is through having seen the actual source code.