I think the main issue for most casual users is the office suite and browser. LibreOffice/OpenOffice.org unfortunately do not cut it for quirky functionality/aesthetics etc. The most polished alternatives Corel and WPS Office only WPSOffice have a ready deb/rpm installer while also having a collaboration feature inbuilt. Corel seems to have decided to concentrate on a windows only Law vertical , whererthey are admittedly not doing too bad. Browsers should do most of whats neeed for the rest of the saas apps even the video collab apps like Teams/Zoom have a browser mode.