There are entire governments in the EU with workflows built around Microsoft products that have no real 1:1 alternatives. If a governmental procedure stipulates that a ministry uses Windows w/ Office365, it uses Windows w/ Office365, no room for an argument. If anybody pulls a plug here, the consequences will be unimaginable.
It's nice that a single German state has switched to LibreOffice, but the rest of Germany, or the remaining 26 countries might take years, if not decades, to certify and permit someone else's solution.
https://www.techradar.com/computing/windows/france-has-ditch...