Windows is a remarkably open operating system for users and integrators. While Microsoft doesn't give out the source, they don't have to -- you can dramatically

Windows is a remarkably open operating system for users and integrators. While Microsoft doesn't give out the source, they don't have to -- you can dramatically customize virtually every part of it, install whatever you'd like, do whatever you'd like, etc. I don't think the Windows analogy flies at all, except perhaps to support Android.