Also worth considering if there is survivorship bias in this wisdom. Would Carmack be in a position to give advice on how to make Quake if id slacked itself in

Also worth considering if there is survivorship bias in this wisdom. Would Carmack be in a position to give advice on how to make Quake if id slacked itself into shutting down before Quake was finished? Remember that Carmack also started a rocket company. You probably wouldn't take his advice about how to run successful rocket companies. (this isn't shade on Carmack, he's my hero)