NOTE: I understand that Linux’s popularity is relative. Linux has been around longer than Mac OS X, but Linux failed to gain much popularity until Mark Shuttleworth started Canonical) and its Ubuntu project) of creating a desktop for the masses that would be updated twice annually on a regular schedule (each April and October, hence the naming conventions for Ubuntu versions featuring the year and month of the release along with an alliterative name - 14.04 aka Trusty Tahr, for instance). Even an older iPhone or computer can be left behind and unsupported by Apple (until recently, Apple still supported Windows XP for various products such as iPhone syncing, but Apple offered no similar support for many of its own prior operating systems, such as 10.6, even though that operating system was not nearly as old as Windows XP). Mac OS X is extremely well designed, but Apple does not play well when you attempt to step outside its ecosystem. But, with Linux and Mac OS X, Unix systems have now achieved wide-spread success.

Unix systems have been around for more than half a century.

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