He he meelash! Might have beat you to it, but I think you expressed it better.
The problem with 'OSX on generic Intel hardware' is that this strategy has a lot of risks, with the majority of possible outcomes being Apple going bankrupt.
And history has a tendency to repeat itself, so better learn from it and don't do the same mistakes twice.
Even if Apple would limit OSX only to a handful of 'blessed' hardware manufacturers, we end up with the same situation that we had in the days of the Mac clones.
And as meelash pointed out - that didn't work either
Apple just lost too many hardware sales, which is still 50% of its business.
I can see this happen though, many years from now, in a time when desktop PCs and notebooks are used by businesses only while the vast majority of home users have just mobile devices which dock into a bigger screen + keyboard at home.
At that point, when Apple like all other PC manufacturers focuses their traditional (Mac) hardware on the business market, Mac OSX could be sold as a separate software product, if Apple chooses to slowly exit the business hardware production.
Hopefully this is the end of that idea in this thread!
Unless Ireland tells me I'm dead wrong...