While the article stated that Apple didn't do what they wanted them to, but it's too bad they didn't say what they actually asked Apple. I'm curious.
It doesn't matter what they asked. Gaming is not now and never will be a priority at Apple unless Apple decides, unwisely in my opinion, to make their own proprietary console platform. At the modern Apple, gaming begins and ends with Tetris -- simple, brief diversions.
I worked for a major publisher of PC, Mac and console titles -- think top three bestselling PlayStation 2 titles for the entire life of the platform to date and you'll be on the right track -- at a time when we entirely dropped Mac support for our titles, including killing in-process Mac ports. We hadn't even asked for anything: they had one publisher liaison for games who was enthusiastic but couldn't get anything accomplished within the greater Apple because no one else at Apple cared. The gamers at Apple went home and played on consoles or Windows PCs.
Microsoft on the other hand has developed much technology and employed various marketing strategies to support game development. In fact, there was some enthusiasm for games building at Apple when Bungie showed off Halo, the initial development platform being G4-based Macs. Then Microsoft bought Halo, put Bungie entirely on Halo for their Xbox console, massively delayed Halo for PC and would have killed Halo for Mac altogether except for the fact the Bungie guys went nuts at the thought and the engine had already been developed on the Mac and actually ported over to the PC-based Xbox architecture. So they went ahead and released it for Mac. But that about killed enthusiasm for innovative games on the Mac at Apple: basically, we get one, a big one, and Microsoft "steals" it.
At this point, despite an entrenched PC game following that won't die out en masse for a long, long time, Windows gaming is a losing proposition: the constant system upgrades are expensive and a hassle. With the exception of a lot of real-time strategy titles, Windows gaming exists mostly as a proving ground for technology that will be ported over to current generation consoles. And with the capabilities of current generation HD game platforms for ports and original development, who really needs the PC experience but gaming technophiles? The new consoles provide most of the experience at much less than half the cost, if you consider the upgrading you'd do to a PC over a console's life cycle.
There's no reason for Apple to pursue gaming now. If you really want a Mac that plays AAA titles, buy an iMac with a good GPU, or a Mac Pro with an upgradable GPU on a card, buy some Windows flavor, install it and dual boot. Otherwise buy a current generation HD console. Apple would be pursuing a mostly static market that will move very few Macs in the future. Likewise, there's no reason for Valve to support Macs, as even casual gamers with Macs only will buy into HD consoles and supporting those consoles supports gamers with Macs.