I think TechyDad is right on the money with his suggestion. Chicken broth wouldn’t be nonexistent, but it would be more expensive. It would be more economical to keep your own chickens for eggs and replace them every two years when they start to slow down on laying. Retiring egg chickens don’t make great meat, but they do make great broth. There should also be more small farms doing that on the scale of a few hundred chickens at a time, not a hundred thousand chickens all in one building in cages where they can barely move around and they never get to act like a chicken.