Very true. Maybe I misread your previous comment as being more binary than you intended.
Keep in mind that reviewers of free software are also often employees and may have some agenda beyond pure altruism, even if the software isn't copyright of the employer. Open source is big business these days.
It all is. The person contributing to gcc needs to make money somehow.
Well, at least it could be considered tainted by self-interest if you're paranoid. My point was that commercial interest does not prevent quality/security.
