For Duck OS to shine, you really do not need a civilizational collapse. Consider a world that existed in 1960s, where computers were not affordable by a median family and only Universities and Research institutions can have them. We can get into that world with a dash of hyper-inflation and war in wrong places.

Semi-conductor industry has complex supply chains, and if cost of bunker fuel shoots to say $500 dollars a barrel, we are done with transcontinental shipping. There are few ways of getting there -- I know Civilization Collapse has dramatic effect and is the right marketing.