If it was a dozen aircraft, which is where the Russian 5th Gen fighter program is presently, then that might be it. But the US military is ordering over two thousand of them. That's a little much for keeping the skill and knowledge base around.
It's more likely that 2,000 of them will never be delivered.
It'll be more like 500, and they'll kill the purchases in N years and move on to the next program. A higher volume mimic of the F22 outcome. The defense contractors will make 1/5th as many as planned in 2010, at 1/2 the cost.