Most people don't realize but the vast majority of Video Editing was Windows based till about 2010 when Final Cut was considered best in class (I can't stand Final Cut myself but to each their own...) The vast majority of video editing is now Premier due to Apple's handling of Final Cut Pro and the lack of support for the Mac Pro (They usually sit in back rooms as expensive file servers) Also most people mentally think that somehow Apple is better for design but the software runs just as well on Windows.
The iPhone and the money spent on software is what is keeping people these days. But whenever I talk with my friends they are certainly not thrilled and zealots of Macs anymore. The vast majority of my video editing friends are getting really frustrated with what they call the ceiling. Do you really want to be editing full time on a lap top? The Mac Pro isn't a real solution for full time editors.