Tragically misunderstanding import replacement. If I have Jacobs right, the idea of replacing imports is so you can export what you make, and use the money to import cool new stuff, which you replace in turn, and so proceed ad infinitum: it never stops.

Critics of import replacement sometimes wrongly characterize it as having the goal of ending importation, and rightly call that a mistake. An admirer of import replacing who swallowed this idea for some reason would soon be in trouble, so you could have a group who interpret the word of the Blessed Jacobs as an exhortation to isolationism and self-sufficiency.