Our office is slowly moving towards it. They just don't call it Linux/Unix.
Our servers got cheaper so its just Debian. People use the office phones so its just Android/iOS for a lot of work out in the field. Only the office workers really use Windows now. Even our IIS servers are starting to get decommissioned. A LOT of things are going SaaS/cloud so theres less need of a dedicated anything at an office. Ironically Microsoft kinda did this to themselves.
Linux gets popular when people dont call it Linux.