Hyperindustrialization has done the exact opposite! The middle class can only afford prime rib and tenderloin because more than half the weight of the cow gets processed into gelatin, burgers, pet food, and stew meat (A friend and I split a whole cow from a local butcher but my stats are based on grass fed). The price of off cuts is entirely demand driven: i.e. flank cuts that are popular in Latin American cuisine are dirt cheap in New England but really expensive in California. Stuff like offal absolutely dominates pet food inputs.