BY John Montgomery:

A followup argument to this is that Apple should license the OS to external hardware manufacturers in order to provide users what they need. They tried this in the dark days of Apple and it failed miserably. Having been the owner of a PowerPC clone, I know this first-hand. It didn’t work well. There are some who will disagree, but there are significant benefits to controlling both the hardware and software OS as Apple does.

Times are changing for computing yet again. Only time will tell if this was the right path. Nobody knows.