This was a really great article. This part stood out to me in particular: > But what these tales are absolutely forbidden from representing is any agent or action that falls into the social class or milieu of the people who chiefly collected and read them. So the Grimms’ own world of government employees, highly literate women, libraries and universities is perhaps the most profoundly forbidden space of the folk tale…
It may be less common than "high castles", but that is either because of opportunity cost (non-special characters do not survive well this kind of world, so their stories are either short or picaresque) or feature creep if they start from the bottom: if you want an uplifting tale, upwards mobility is needed and at some point only the king is up...