The only way I can see mass adoption of Macs as gaming hardware is if Apple takes the walled garden approach to gaming a forces a tiered system so that Macbook A will run games with a developer preset for that particular Macbook series. Then they have the same for desktops. I can’t see Apple letting consumers take control of the visual settings in any significant way, because they would have to hire a full time staff just to deal with all of the Mac users that call in wondering why the latest EA game runs like ass on their new $5000 Mac. They’d be better off taking the Nintendo approach with curated games developed with Macs and certain settings in mind, and if they are going that far, they may as well buy a few studios for exclusives (which will inevitably get cracked and distributed to PC).