Earlier quoted context omitted.
> - Chrome is built on Chromium, which is open source, but Chrome itself is not. If you've actually tried using Chromium then you realize that this distinction doesn't make much sense. Chrome IS Chromium + Netflix + Flash + updater/Omaha + flashier logo. > - Android is based on open source technologies, but is, again, not itself open source in many cases. Android itself is open source (AOSP) and is very much a usable…
> As you said yourself, your claims are out-of-date. AFAIK, the only three remaining language implementations that matter today that are not open source would be Oracle Java (very close to OpenJDK), Apple's LLVM form (naturally very close to real LLVM), and Microsoft's C++ compiler (AFAIK generally considered to be crap). Not a much of experience in the embedded market, high integrity market, medical devices, hardwar…
And that makes sense—the tools that developers use being metatools that they can work on and improve, targeted directly at the audience that can work on them—I'd expect nothing less than near complete adoption of such a thing.