>>27995
Civilian industry buildup couldn't have been successful, since the result, all that goods produced, would have needed markets to sell at (inner markets can suck up only so much) which were impossible to find. Even the author says so with that level of civilian production they couldn't find buyers, also the relatively strong Reichsmark also was in the way of meaningful export. And the overproduction of goods, creating needless supply also hurts the economy.
So the reanimation of the military industry basically was the only way forward and inevitable.