You hit on the key problem of Apple in 2008. Nearly all CPUs use the same instruction set, so that software is fundamentally independent of hardware. Yet Apple is forcing customers to buy their hardware to use their software. There are many different US laws which forbid this practice.
There is no one buying Apple hardware and running a different *base* OS on it, even though Apple makes that extremely easy. This demonstrates their illegal market leverage.
It also demonstrates a horrible double-standard. Apple encourages you to install other OS on its hardware. Yet it forbids you to isntall Mac OS on other hardware. Total hypocrisy which WILL matter in court. There can only be one standard. If Psy is guilty of some kind of bad practice, then Apple is guilty of the same bad practice on a massive scale.
Apple has *always* made their money on hardware and their market share on software. Always. No one cared when they had 3% market share. Now that they are filling the Vista gap (along with Linux), people do care.
Microsoft clearly demonstrated that you can make a fortune simply by selling an OS. It doesn't even have to be good. Judging by the quality of the current Mac lineup, the best thing that Apple could do would be to *stop making hardware* and facilitate the Mac OS for all the major manufacturers like Dell, HP, Lenovo, etc.
Apple's costs would be a tiny fraction and their revenues would be comparable. Microsoft gets a huge license fee for every copy of XP - Apple is still trying to get that money by building overheated, underpowered, unexpandable desktops out of laptop parts (iMac).
The iPod has given Apple the revenue "cushion" they need to make this transition. It's time.
Bravo! OP this is the best post I have ever seen on MR my hat is off to you sir.