We are just one executive order away.
Just look what they try with Harvard. The EU is an easier target. Just ban M365 for EU use.
Think of this at a larger scale
https://www.lbc.co.uk/world-news/british-icc-chief-prosecuto...
https://www.swissinfo.ch/eng/multinational-companies/us-rest...
We still remeber the Crypto Wars
https://en.wikipedia.org/wiki/Crypto_Wars
https://github.com/howinfo/howinfo/wiki/Backdoor