@tarakiyee
I agree that most activities are far from "sustainable".

But it's not really one company, nor one central IT. It's 31 supreme federal government authorities, about 70(?) Higher federal authorities below plus some attachments.

And their MS infrastructure (Standard: Exchange, Active Directory, Outlook, maybe Sharepoint, MS SQL etc.) is usually still decentralized, efforts to concentrate it on a single service provider (IZT Bund) have been delayed/stalled.

So 400€pP? Still cheap! ;)