For military applications you don't need volume, you need reliability. In the 70s U.S. the military was the main buyer of chips, now they are reduced to just i guess less than 2%.
You need volume and reliability if you want large number of drones and PGMs at your disposal. 2% sounds small but you are counting all the smartphone and cars and smart toaster smart microwave oven out there, then you realize 2% is absolutely huge