Except here, you do have to modify the OS in order for it work - as well as any updates that come down the pipe. Take a look at Psystar's site, they modified Software update to look to their servers for modified versions of the updates, not Apple's for the actual version.
That's the bit that I'm commenting on - they shouldn't have to modify the system, they only did to prevent apple from crippling the computers bought from them.
Yes, apple do own the software and yes they should be able to do what they like with it, but they are overpricing their hardware and forcing you to make sacrifices just to get your hands on their software. The laptops are fine, and although expensive, they are not too bad.
It is the desktop PCs that I draw the line at; they need to release a low power, standard desktop (that does not cost £1700) - with normal PCI ports and full size HDD & CD Drive support, and until they do - I am going to back any company that makes a product that is capable of doing all these things and running OS X. Don't get me wrong, Apple's hardware is some of the best out there - but seriously? the Mac Mini is the only real desktop option for most of us, and you can't do anything with it - I can't put a better graphics card it, upgrade the hard drive or CD drive properly and they even make it very difficult to upgrade the RAM.
Come to think of it, the only laptops that I've seen in my life that you can't replace the HDD with ease are all made by Apple - the last 3 laptops that I've owned (and even the 10" Eee sitting on my desk) all have covers on the bottom that provide direct access to the HD.
Sorry to change topic (away from Psystar and onto design flaws with Apple's computers), but I don't see why Apple can tell us how amazing OS X is, and how we should all ditch windows and then control what we can and can't do with our new products.
Anyway, this discussion has turned more into an argument, so I'll just leave it at that. You now know my opinions on this matter, so now it's up for others to share theirs instead of just argue with all of my points.