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.

Protected Sharepoint docs are only openable with the desktop app too.

What is the business alternative to ms?