It’s not a matter of technical merit, but one of first-mover advantage and vendor lock-in.

By many metrics LibreOffice is superior to Microsoft Office, but what keeps people locked to Microsoft Office is,

  1. Public consciousness/pervasiveness.
  2. Business integration via Excel’s scripting

By many metrics Linux is superior to Windows, but what keeps people locked to Windows is,

  1. Shattered UI experience across distros, leading to wildly different UI/UX that makes it unfamiliar and frightening to NPCs.
  2. Lack of interest from large software vendors to support anything other than the primary horse in the race.

Hell, that second one can even be seen with MacOS, with how many software vendors don’t even give a second thought to that platform aside from providing a highly lobotomized online-only version of their installable Windows-only software (looking at you, QuickBooks/Quicken/TurboTax).