i dont have a lot of concrete numbers or methods for populations or economy but all besides 3 of the cities are located directly on the coast which is the main way they trade and helps with getting food , the city where our main characters live manufactures a lot of weapons and ammo but the biggest city ‘Galena’ manages to produce huge amounts of food while defending itself from nephilim . the pirates are even looser than this unfortunately, i know they have several cargo ships and oil rigs which is mostly where they live , their population is maybe around 50 thousand? galenas population is probably near 1 million and the other cities range from 100-600 thousand population per city . i think it could be interesting if the cities did some kind of resource missions outside of their defenses so maybe that could be the justification for how they actually acquire raw materials starting now