I'm late to the party here, but here's my opinion.
Even back when I worked as a Systems Engineer in the Apple ecosystem- their hardware was a generation behind, more expensive, and landlocked to their own OS.
That doesn't mean that weren't a great computing platform. But in today's ecosystem I'm not sure that business model works so well. And I'm pretty sure Apple doesn't care since the bulk of their profits come from elsewhere.
What Apple and other companies are missing, is that now is the time to *invest* in the desktop space. With VR coming into vogue, alternative OS availability, strong gaming, and the semi-demise of Microsoft- it's time to embrace the desktop rather than run from it. The platform is far from finished, still has incalculable advantages in performance, and has many uses not even dreamed of yet.
But Apple, in my historical opinion, stopped trying to lead shortly after the release of OS 10- which had great promise. I've still got the alpha and developer releases on CD- and yes it runs on generic x86.
So we'll see the death of the Apple platform unless they invest heavily in newer technologies. But they've been so engorged with cash from the iPhone that they will not see this vision. The smart move would be to move OS X onto commodity hardware.
But I do not think that will happen. Rather they will milk the desktop for whatever they perceive to be left- and when the desktop platform roars to live with a new killer app- they'll be left flatfooted.
And... um.... VR is kind of doing that now. It remains to be seen if that will be sustained.