@aral That's why I specifically excluded those. That constitutes I'd guess a tiny fraction of 1% of real world desktop installs. But IBM's Redhat division probably uses 99% code that they did not write, despite their absurd complaints about people using their code for free.
The closest you'll come to significant numbers of realworld RHEL users are Fedora users, who pay nothing.
In #FreeSoftware, real question is what have I done? Not they, or you, or someone else, but I. Confuses consumers.