The "about rich people" part is probably a distraction now that I think about it. With regards to culture building, I think it's much more important to focus on who is telling the story, not what the story is about.

Poor people telling stories about rich people still enables the poor to have agency in culture building. (And, in fact, it is probably most effective to have them tell stories about the rich so that the rich can be seen from an outsider's perspective.)