probably an element to it of not attracting the wrong people, they recruit largely fresh out of college and I think the expectation is that people stay, akin to a career in civil service.
If you had people cycling through one of the most critical branches of US intelligence at startup pace primarily motivated by money that probably creates some issues. Because they probably care where these people wander off to when they leave the agency
"The geeks who man the NSA don’t look much like Julian Assange, because they have college degrees, shorter haircuts, better health insurance and far fewer stamps in their passports." -- Bruce Sterling
If you had people cycling through one of the most critical branches of US intelligence at startup pace primarily motivated by money that probably creates some issues. Because they probably care where these people wander off to when they leave the agency