You are under estimating the power of formula. Disney had a huge run with prince-princess stories for kids and they only recently toned it down because of huge negative effects on kids. They can easily go on forever on this theme if they want to. Vast majority of movies made in Indian cinema (aka Bollywood) are information-less and even story-less movies that just revolves around one thing: Two people fall in love and there is some problem. You can literally find identical story lines in other 100s of Bollywood movies. Very very few people there has given thought to making movies on something else. This has been going on for about 50 years there and no signs of stopping.