THERE IS NOTHING ILLEGAL HERE! PSYSTAR HAS DONE NOTHING ILLEGAL!
If Psystar had done anything illegal, they would be prosecuted by the State or Federal Governments, not taken to court by Apple. Violating a EULA is a civil, not a criminal, matter. You can violate EULAs all you want, there will be no consequences unless those companies actually sue you. They would have to sue you, since there is nothing illegal going on here.
Technically I can see nothing wrong in selling a generic hardware box that can run Windows, OSX, Linux, etc. as well as retail versions of those OS packages for the consumer to install themselves. Technically it isn't the person or company selling the hardware that is installing the OS, it is the end user. If anyone is violating the EULA, it is the end user. I can re-sell retail OSX boxes until I'm blue in the face, but that doesn't make me responsible for how people install or use the product I sell.
I think this is a brilliant idea, actually. In fact this appears to be the method employed by Quo Computer -
http://quocomputer.com/. Check them out. You can by a generic box that will accept any OS, and then they sell you the OS to install on the box you just bought. Voila, no problems with EULA! Anyone who would have contemplated a Psystar PC should check out Quo. They seem to be doing alright and are not being bothered by Apple.