No we can't. In the early 2000s we desperately tried to get our governments to be less dependent on Microsoft and we completely failed. Europe is not a federation like the US, worse many of the countries in Europe themselves are governed much like federations. We are easy prey for big American corporations. It's easy for Palantir to sell their product and then a thousand little government organizations will claim there simply is no alternative at the same quality level.

And I am very happy about that superpower. Regulation is a very good thing, specially when wielded against US big tech.