Linux is a fine desktop OS. Been using it for near 10 years now, can't see myself going back to Windows.
General users mostly need the proprietary software to do their basic work. Some want Microsoft® Office (Especially Excel®, not LibreOffice Calc), others want Adobe® software, another needs Autodesk 3DS Max and they don't want to play with their OS if something is broken which is what you'll always get with a Linux distro.
No person can take desktop Linux seriously if they still ask about this software still being missing in Linux. It's back to macOS and Windows for them.
When I want the nix experience, I'll get it on VirtualBox (I don't count WSL, personally; though I do use it)