Do you have any evidence to support this statement? I ask because if
what you say is true, most companies willfully and severely restrict
their options.
I suppose Apple isn't evidence. Perhaps Apple is a figment of my imagination? And no, they are not a singleton.
Additionally, it's not hard to find past discussions of integrating cpphs into ghc, which were effectively blocked by many people reporting that corporate lawyers would force them to stop using ghc if it happened.
GPL3 is *toxic* in the corporate world. Doesn't matter what RMS and co. claim outside the license itself; what decides reality is what lawyers determine from the working of the license, and their willingness to face court challenges based thereon.