There is a misplaced belief in the pervasiveness and effectiveness of nameless national surveillance bodies.
The fact is surveillance costs big money, a few billion apiece for each of the large NRO payloads, so the number of satellites is small and they are fully tasked. The US push to use commercial sources more extensively simply underscores these economic realities.
If any of these entities had a clue, the searchers would not be stumbling around as at present, trying to 'find the haystack' in the lapidary words of an Australian search leader.