Also, the "there's no drop in replacement" line is just making up excuses for not acting. Yes, you will not get 100% of the Office 365 features out of the box. There will be some friction.
It's simply ridiculous seeing EU bureaucracy preparing e.g. to ban russian oil [3], making life more expensive for all people, and balking on being forced to switch their stupid word processor.
[1] https://news.ycombinator.com/item?id=46923736
[2] https://github.com/suitenumerique
[3] https://www.reuters.com/business/energy/eu-propose-permanent...