That's not entirely true. You can hackintosh almost any PC these days, given you get the right drivers for stuff from the vast Hackintosh community out there, and you'd be surprised at how well OS X can run on generic hardware. You'd TECHNICALLY be going against Apple's EULA, which means if you take the plunge and install OS X on non-Apple hardware, and there's an issue you can't resolve? Don't go crawlin' to Apple for help and tell them you installed OS X on a non-Mac... they'll look at you funny and deny any support.