Happened to 9?
Word is that Microsoft wanted to distance 10 from 8. They didn’t want people to assume 10 was the next logical step from 8, but a new idea entirely, so they skipped 9. Apparently the #'s “7”, “8” and “10” don’t mean anything. They’re just numerical names akin to using “XP”.
Also: compatibility. Old applications would look for the person “Windows 9” and assume you were running Windows 95 or 98. MS wanted to avoid that too.
Also: y’all should use Macs.