rockstar creates games based in reality or historical settings, with some satire and creative liberty to make it more engaging; the strength of their games is how many different types of activities and over the top crazy shyt you can explore
bethesda and obsidian create the equivalent of fantasy epics with the elder scrolls and fallout, with mad lore and background structure; theyre much more reliant on the fables their games are based on being good for the sake of the rpg, so its much tighter around the edges in terms of world building
basically thats a fact, fallout can’t afford for its world to be less developed because thats the whole point of the experience to play like some crazy scifi shyt