Would it be viable for Apple to release Black Panther (an OS X flavor for all PCs)?

"The thing is that, although you might be able to accept the bugs and incompatibilities, the rest of the consumers won't. Releasing an operating system with poor third party driver support would only 'taint' and 'dilute' the OS X image for Apple.

Besides, Apple does not make money from its operating systems. It mainly makes money from hardware and its higher-end software, such as Final Cut Pro"