They tried it a long time ago, but it seems to be rolled back to Windows again. https://en.wikipedia.org/wiki/LiMux

I hope our French friends can learn from this initiative during the adoption phase.

There were and are initiatives. Of course, they were and are ridiculed all the time. Who can't recall LiMuX or check out ZenDIS (Zentrum für Digitale Souveränität in der öffentlichen Verwaltung). Read up on the current migration away from MS Office in Schleswig-Holstein.

You did, and you'll do again. Just like quitting smoking.