I think its safe to say NSA/GCHQ are not the only ones in the game who have hit this target.
It would make sense that NSA/GHCQ wouldn't want their foreign competitors to share in the prize, and it would also be congruent with their interests to not afford competing actors access to such a prize.
Then again, this notion is likely far too romantic. The reality is probably closer to one where foreign actors have compromised everything just the same.
Intelligence is wheels within wheels within wheels...
Aren't mind games fun?
Emphasis on can, of course.