Such as? You think if meat in the US doubled or tripled in price there’d be a black market that would overwhelm those gains? I really doubt that you have any evidence for that.
I mean the bio meat market for example. Here (netherlands) any bio product is more expensive on average, and the cheaper non bio products are cheaper, so guess what meats are consumed more?
I'm guessing that you mean "organic" here (since e.g., the French word for organic foods is "biologique").
You're talking past each other because he is imagining some kind of more sustainable meat coexisting with traditional production in the market and you're imagining only this new kind of meat being available for purchase.