The companies have hinted there is much more they would like to talk about, but aren't allowed to. It must be hugely frustrating for them to see headlines like this, and be saying "yes, but you are missing the really important facts which we know but aren't allowed to tell you!".

I wondered if the comments in those slides about these companies "joining the program" were meant to be an internal joke. In other words, this could be internal NSA jargon for "screwed up their security badly enough that we were then able to wholesale intercept data going between their servers".

These latest revelations would seem to imply that no, it's not an internal joke.