[davidf18]

It is possible/probable that these processes are used by NSA/DARPA, military applications. In many of these situations performance well trumps volume/cost issues.

[Nokinside]

Not really. NSA/DARPA have no need for small batches of very expensive circuits manufactured with 5 nm.

They need large volumes of cost effective processors as well. Manufacturing their own special purpose asics with older technology is more likely.