Personally, and my opinion might not rest well with the majority here, in order for Apple to grab the market chunk they want, and ever dream of taking over the desktop market, they need to make OS X available for regular PC hardware.
Why not sell the operating system stand alone, and continue to sell their own hardware under the Apple name. If Dell succeeds selling someone elses OS, and their own hardware, wouldn't Apple succeed because not only would they get money for selling their own branded hardware, but also from stand alone OS sales. I have a feeling if they opened it up, most of you guys here and the rest of the hardcore apple loyals would still buy hardware from them. They are known as a company that makes solid computers that are reliable and dependable, and I doubt sales on their systems would slip that much. Think about the buzz it could generate, with people knowning they don't have to buy a new machine, to get a more secure operating system. Then when it's time to buy again, they will likely go back to the source of their pleasure.
Also it's easier a lot of the time to convince a company to try new software, than to replace physical hardware because that becomes expensive. And the corporate market is a strong road Apple should try to follow. I saw the stats about the amount of people using Mac's at work, but who knows what criteria those surveys were done on. At most places I had worked, only 2 people in creative had Mac's.
I hope what I meant to say came out right, but I think that's Apple's greatest chance of success.