If you want to move away from <insert US tech giant>, you either need to embrace Linux and open source software which requires the state's employees to learn a new "stack" of applications which means they need to be given appropriate training or you need to have you home grown solutions that are as easy to use as their US counterparts and were developed within the EU by the EU's member countries with the EU's values embedded in them.
The first solution is not going to happen, as Linux is still relatively unknown all things considered and I don't see the French government employees learning how to use this OS and/or the applications running on it by themselves.
Secondly in times of budget cuts like in France currently, the government is not about to rip all the Microsoft products off and replace them with something that would take years to transition to and cost a fortune to implement.
So that leaves the homegrown solution. Unfortunately the work to move off of Microsoft et al should have started 10 years ago but it hasn't. Europe has completely dropped the ball on tech and now it's coming back to bit it in the ass.
The Draghi report from last year was supposed to kick things into gear but we will be lucky to see anything coming through within the next 5 years and by this stage the US tech giants will have entrenched themselves even more in the EU.
I am sorry to say but this is a failure that will resonate for the many decades to come.