Not a shame for game developers. It's nice to have some ability to predict that the failure modes where cards diverge from specification will tend to diverge along the same paths, because they're made by the same vendor.
Granted, it'd be preferable to live in a world where the drivers and hardware are open and inspectable (so you don't have to debug graphics issues as a black-box problem), but we've never lived in that world and between the likelihood of AMD's initiative taking root and a de-facto Nvidia monopoly, I'd rather have the monopoly.
Granted, it'd be preferable to live in a world where the drivers and hardware are open and inspectable (so you don't have to debug graphics issues as a black-box problem), but we've never lived in that world and between the likelihood of AMD's initiative taking root and a de-facto Nvidia monopoly, I'd rather have the monopoly.