The very short version: it is madness to continue transferring the running of European societies and governments to American clouds. Not only is it a terrible idea given the kind of things the “King of America” keeps saying, the legal sophistry used to justify such transfers, like the nonsense letter the Dutch cabinet sent last week, has now been invalidated by Trump himself. And why are we doing this? Convenience.
While I agree, open source technology hadn’t yet fully matured when the NSA leaks first dropped. Something like Owncloud had only recently launched back then.