The merging alternatives will always demand more labor and inputs and a higher sales price. Fortunately folks are prepared to pay premium pricing for premium food.
While i see problems in terms of Beef and Hogs that may force major changes, i also see the farmed fish industry tracking the success of the chicken industry. Other semi wild stocks of meat animals will continue to be expensive specialty markets which is just as well.
More practically, all these birds and animals serve dual if not multiple purposes on an integrated organic farm protocol. Worse, hidden costs like manure and feed grains are also been subsidized in the factory protocol. This must change although it now appears to be transitional in pacing.
How a massive breeding contest turned a rarely eaten backyard bird into the technological marvel that feeds the world