Apple (or, rather, Steve Jobs') notion of a credible Graphics Driver Developer as part of the OS X team is a monkey who plays around with a steering wheel attached to one Etch A Sketch knob (steering both knobs simultaneously would blow its mind).
The time is ripe for Apple to open their OS to clone makers again. Restrict licences to desktops amongst a few manufacturers only. This may tempt in a whole new demographic and increase market penetration. Their desktop sales are dwindling and MacOS needs to be on feature competitive machines for gamers, OCers, etc.