> The evolutionarily stable strategy for a piece of software is "anybody may use this for anything, including commercially, for free." That's MIT, BSD, Apache, the licenses that ask for nothing. Every project that has tried to be a slightly less generous dove has lost to a project that stayed a full dove
Linux (GPLv2) seems like an obvious counterexample?
Arguably that happened because Linux was, in fact, the most generous option: the BSDs effectively refused to get contributors beyond their very small groups, and refused to incorporate patches to support "bad" hardware or nonfree blobs - meanwhile, Linux was built around modules that could contain anything regardless of license, and happily accepted new patches and unknown maintainers. You still see it today: Linux literally built its own distributed VCS (git), while some BSDs are still on the hyper-centralized CVS.
If there isn't an even more generous option is simply because building a mainstream OS is incredibly hard.