Wellllllllllll . . . DOH!
1. Movie studios are NOT as stupid as Congress, OThuga et al. They typically do their research rather well. They talk to quite a number of experts and first hand experiencers.
2. Even if the oligarchy is seeding, funding and/or scripting such movies etc. THEY would likely have SOME interest in being authentic to the real thing—which they have more knowledge of than any mortals.