Isn't even "normal" economic activity affected by narratives? In the 1990s, everyone was talking about the limitless potential of the internet the Nasdaq. People told each other that housing prices could never fall and we got the subprime mortgage boom. I wonder whether stories shouldn't have a larger role in economic analysis than just explaining why macroeconomic fluctuations happen?
A related, self-interested question is whether sociologists aren't the "experts" on this topic. After all, sociologists have been looking at narratives and discourses far longer than economists and have a much better tool set for examining them.