Traveller postulated the humans fighting a mighty empire. Legions of Steel had a bunch of aliens fighting the machines. Warhammer has humans vs chaos, The point is we can look for answers in other areas, make our own canon and scenarios. If a set of stories seems too near the real world or driven by sales create a discord and advertise it for players. Anime flavoured? Bakunin. Space combat? Pick up some rules from the many sets out there. Have fun
