Quote: Ohh my. Please consider a bit more than economics of a large company. You do know why heritage breeds will never be as productive as commerical birds right? Heterosis is the reason that four way crosses were created! Not because of money - Trust me we can breed sex link dwarfism and other terminal genes into the terminal generation to discourage breeding.
You say it's not sustainable... But yet after 50+ years we a have stronger poultry industry than ever. And in fact if you want to take to the next level it is sustainable, because grandparent lines breed true, they, so we can have a consistent supply of grandparent birds, and parent birds. People can try to raise heritage breeds for meat, but in my view that is an unstable model, if anything they use more resources to grow- But I should digress and get this topic back on track