In the current climate, using MS Office is a business risk for European companies. Who knows what idea will pop into ol' minihands' head next time he has a bad day at the golf course? Like, it would _not_ be particularly shocking if at some point in the next 2.5 years he attempts to interfere with the ability of US companies to sell services to Europe. You can no longer depend on "but that would be an obviously terrible idea, so they won't do it" as an operating principle; see the tariffs.

Frankly, right now, there is a lot of money to be made in just providing safer alternatives to American cloud stuff. They don't need to be _better_, they just need to be based in a stable jurisdiction.