Earlier quoted context omitted.
It’s not the egg industry that will lose out if more people have backyard hens. It’s the poultry industry and the eating general. More people will start to find eating intelligent emotional animals as abhorrent as eating dogs or cats.
People have been keeping intelligent animals like chickens, pigs, and cattle for millennia. And continuing to eat them. Ironically, vegetarianism really only started to become popular in the Western world once people lost their connection to farms, and meat and poultry were something you bought in pieces, plastic-wrapped.
Poor people ask if you got enough to eat. Middle class people ask if it tasted good. Wealthy people ask if it looked good.
Which correspond to points on Maslow’s hierarchy of needs. I think we can use that framework to understand where vegetarianism and veganism fit in. You might say that they are either related to personal feelings of being ethical or status symbols, or both.