"They'll be back."
Nah, a number of careers will depend on 'making this work', so it will work. On paper at least. They'll probably allow some special cases to stay with Linux, just like they retained Windows over all those years.
As far as I know my German politics, this is an issue of people yelling we need to update our IT infrastructure / hardware /... and the people in charge deciding that this is the perfect moment to get a bottom-up review. Deciding on a fundamental change then suddenly unlocks all that money that, otherwise, would not have been available. Everybody wins (a new computer).