You're right, but lots of people know about DOOM and Quake right?
I don't buy that. They managed it with Turing, didn't they?
Well, Turing can be turned into a martyr for gay rights (as I understand they've done with the movie, which I haven't seen). I guess that's a lot "cooler" than anything about Carmack, at least AFAIK.
"The story of the guys that created the FPS" sounds pretty cool to me.
Something something see the guys that practically invented Call of Duty and other shooters. Easy sell.