Various european public institutions are moving to open source solutions
meaning just Germany, the Netherlands and Germany. Even if this were true, they are incredibly underfunded compared to what they spend on military and "state security".
the fines for GAFAM are increasing more and more, and starting to actually hurt
The "fines" that are "getting higher" are imposed on GAFAM, it's still chump change even if they add $20 more million to the fines. The highest fine was around a billion euros for Facebook. That fine also was never settled yet either, it's still being fought in court like basically most other settlements. Do you also know how much time it would take for Facebook to recoup that value, if they do get fined that much?

I mean, it is though. Even if it wasn’t it’s still worth doing to support local industry.
It really isn't. Consult every single source I posted in my previous reply to see why. There's obviously nothing wrong with supporting local industry, in fact I advocate for this. What I'm saying here is that there's something wrong with blindly advocating for a Eurocentric initiative that is ideologically bankrupt, one that reinforces a European superiority complex and is only backed by appeals to European nationalism.