I know of exactly 0 European businesses they use free open source software for their office suites.

Z-E-R-O.

I don’t even think companies have their own mailservers anymore, its mostly gsuite and microsoft office 365; people aren’t even hosting business critical applications in Europe unless compliance forces them- let alone using European made tools to do it.

I'm sure there is more to life than using "open source office suite"

I'm not sure I understood your point.

There's a lot more to life than a lot of things, I'm not really trying to discuss personal fulfilment, moreso mentioning that there's no reality where we can get by with European technology right now, and if the US decided to sanction a european country that country would suffer a pretty significant (trillion-euro most likely) shock to productivity, as not only would they need to find new tools and retrain, but they would also lose all their mail and documents.

I'm trying to inform you that there are other jobs other than filling in data in excel.

If the USA sanctioned europe (lol) we'd be completely fine, don't worry.

Yes I somewhat agree on FOSS and I agree for the people. But I think that for the capital, it is massively US controlled (though is international too). Think of the seven first companies of the S&P500. (GAFAM, Nvidia, ...) If you look at the cac40 (france) or EUROSTOXX50 : I dont use directly any products of the tech company. But I'm sure that these companies use at least one the seven. Tech company in Europe are not ridiculous, but they are not leading the change. They optimize, they improve, but the lead is us centric. We have ASML, but for how long. ?

Yeah I'd agree that we should just forbid selling our software companies to not so friendly superpowers.