> I've never seen the government efficiently action on any data they have collected.
Someone else on HN said it would be nice if the NSA published statistics or something, data so aggregate you couldn't determine much from it, but still tells you "holy shit they prevented something crazy" levels of information, harder said than done without revealing too much.
In addition to terrorist stuff, they are probably passing of bunch of stuff to the military or defense industry to do things like fine tune their radar to cutting edge military secrets.
The NSA tried to do this during the Snowden leaks!
There were stories like "look at how we stopped this thing using all this data we've been scooping up"... but often the details lead to somewhat underwhelming realities, to say the least.
It might be that this stuff is very useful, but only in very illegal ways.