Comment by Lio

I would imagine that many EU governments would like to replace MS Office too. EU sponsoring open source development for a mandated replacement would be a huge risk for Microsoft.

The European Economic Area + UK also have a lot of telecoms and networking experience. If they have to pay for improvements to edge networking for a reliable replacement for Teams they could easily bring farm that work out to their telcos.

With enough political motivation barriers will be removed one way or another.