

At work us devs and IT folks use both windows and RHEL Linux. I’d say I use windows for business apps and Linux for everything development related except for terminal apps and visual studio. My database work is pretty much 100% linux. Everyone else in the company is likely using windows.
The vast majority of business apps and network admin apps are written for windows so you either can’t run them on unix or they would require an additional layer of complexity that can’t be justified “just to be on unix”.
For dev and IT work I use a mix of windows and RHEL. Business apps in windows and terminal sessions on our linux servers. My db work is almost 100% linux.