Are there any AAA game engines released under a BSD license to compare with?
I don't think many games (or other software) ended up shipping with code from the GPL Quake source, other than Quake source ports. Is that because of code quality, code specialization, license, lack of support, or something else? Hard to tell empirically; I think a lot of game developers do want to be able to sell their creations, and not disclose their source code though.
> Are there any AAA game engines released under a BSD license to compare with?
Er, stating what should be the obvious here, but the fact that the answer to this is "no" is really making the point of the person you're challenging...
An more relevant question is, "Are there any commercial licensees of id's code, who would have not had to license it had it been available under a permissive license?" Answer for that is, "Yes, lots".
Are there any AAA game engines released under a BSD license to compare with?
I don't think many games (or other software) ended up shipping with code from the GPL Quake source, other than Quake source ports. Is that because of code quality, code specialization, license, lack of support, or something else? Hard to tell empirically; I think a lot of game developers do want to be able to sell their creations, and not disclose their source code though.