Switched to Linux for private use first. Then made my company switch(tbf, we still have to have Windows for very particular uses,but 95% of what we do works under Linux). And now we offer a complete ready made setup for medical clinics/doctors surgeries that operates on it.
Could not be happier. So is my staff and the clients we sold it to.
Not necessarily. Could just mean they use code that is not theirs and their licence does not allow publishing. Happens more often than one would think.