>>30
Both GCC and clang are free and open source, and their writers didn't get a dime for their work.
Companies like Red Hat have paid employees working on GCC and Apple has employees working on Clang. But it is also about
time. Optimizing for a crap architecture takes time that could be better spent on improved cross-platform compatibility or adding more features (C11/C++11) to the compilers.
Oh and before you bring up nonfree compiler software, I'll just remind you that it is evil and a plague.
Using nonfree BIOS and microcode is an arguably worse plague, since it limits what the user can do with the hardware they paid for (unlocking features, overclocking, disabling forced DRM), but Intel apologists never say anything about that.