The company I work at has ~100 employees at our location (there are other locations too, but they each work rather independently).
We primarily use Windows throughout the company, but anyone who wants can run Linux. So we have ~20 people or so running Linux.
It’s primarily people in Software Engineering that use Linux, and here mostly devs and devops. In these areas there is more than enough software for Linux, so that’s not an issue. We sadly use Microsoft’s office stuff a lot, so we have Teams, Exchange and their cloud stuff. So on Linux we use teams-on-linux and Prospect Mail (third-party wrapper apps for Microsoft’s cloud stuff), and they work about as well as you’d expect third-party wrappers for Microsoft’s cloud stuff. Screen sharing apparently still doesn’t work on Wayland, so X11 it is.
A big hurdle is the DPI (=>deep packet inspection) solution that is used in the office, since it doesn’t play nice with Linux for some reason. That took a while to get to work correctly.