My personal opinion is that a win for Psystar would be a loss for Apple's users and Apple themselves in a manner other than just the legal.
By making OS X work on a non-Apple machine, you lose the quality of the components used and open it to all the same issues that Windows has on low-end computers. Specifically, reliability. Windows tends to be very reliable and stable on well-built machines using high-end components. That's why home builders tend to wonder why everyone else complains so loudly about the different iterations Microsoft has on the market. Even Vista, so notorious for its instability and hunger for resources runs remarkably well on a hand-built machine using the best available parts.
Apple does this at the factory. This is one reason why Apple has such a high customer satisfaction rating. It's not just the look of the machine but the reliability and stability of the OS as well. Put the two together and you get a satisfied user. Even I consider Windows XP the most stable and reliable version of Windows ever, but I also built a machine that was roughly compatible to a tower Mac at the time to run it on.
To put OS X on anything short of a premium machine is begging for trouble with the user. Yes, I'd like to be able to install OS X on a machine I build myself, but anything less is nothing but a mistake.