Web version sucks compared to desktop version, unless you use the apps minimally. That said, the Winapps repo is a good linux solution, running a windows VM and accessing the office apps via RDP so they feel like a native app. As soon as it gets wayland support, I'm making the full switch. Winapps in Xwayland has some issues.
The majority of users either use only web applications, or web applications and Microsoft Office.
The true majority of users are on mobile.
Windows is only unreplaceable for gamers. Which is fine, because Windows is a toy anyway.