VMWare, for one, have been able to do this for quite a while with the effort of ~1 mouseclick.
Unless things have recently changed, this is factually incorrect. It might work on OSX, but that's not really the point, is it.
For whatever reason, you may want to be able to run a general purpose X86 OS on your general purpose X86 hardware, or general purpose X86 cloud/cluster.
For instance, getting OSX to run in a regular ESX cluster (for testing, etc) can't be done wtihout immense amount of hackery, and probably requires custom kext-files, injected on another machine before dumping the image and what not.
At this point poor compatibility is just that. I fail to see why someone would try to sell that as something good.
Nobody's selling OSX as a "general purpose X86 os" for "general purpose X86 hardware" though. It's an OS for Apple hardware. It just so happens that the current versions run on x86_64 CPUs.
(Plus I don't think there exists a license allowing OSX to run on a regular ESX cluster. So if it breaks, obviously you get to keep both halves)
VMWare, for one, have been able to do this for quite a while with the effort of ~1 mouseclick.
Edit: Not sure if troll or not?! Getting Linux to run as a guest in Xen 0.0.1 probably took some work, too.