> If you meet your SoW, you will get paid. The FAR is very, very clear on this issue.
I am glad for you that your experience does not match mine. However, I'm going to stick by my statement.
I have had my funding pulled on a budgetary rearrangement. I have had Congressional staffers threaten my contract to score patronage after an election changeover. I have had already completed and signed off milestones suddenly get reexamined as not complete. And, while contracts are very well specified, there is not a lot of point in trying to litigate a contract on someone in the government who is determined to break it.
While my commercial contracts generally work beautifully (not always, but probably less than 5% cause serious issues), all but one government contract I have had longer than 12 months has had some government-initiated disaster (short contracts are better but you often waste too much time acquiring them for the amount of money involved).
I am glad you have never been high enough on anyone's radar to hit this or that you have a powerful champion as your protector. However, I have talked to more than a few people about this and I can tell you that I'm very much not alone.
> Source: I own a small R&D company that works for the DoD and IC
The difference may be R&D vs production. Someone is always looking to score political points by slapping around a supplier.