Apple has nearly 1 billion iOS users and 70 million MacOS users. If Apple had invested more heavily in their MacOS ecosystem, rather than letting products like the Mac Pro rot for half a decade, they may have eaten at the marketshare of their competitors.

As is, many of the Mac diehards I know have migrated their kids off the platform in the past year or two, and some have made the leap themselves. Its a sea of change from just a few years ago.