Theoretically, it is possible to do anything of that, but what is missing from your business plan is selling a commodity product at scale on a competitive price. And if you somehow manage to do something like that, nothing stops the big player of your region from going to any of your clients and offer them dumping prices for ditching you or going to the local vendors of animal antibiotics and offering them premium price if they supply only chosen farmers thus squeezing you and your suppliers from both ends.

If you have a market with low margin and no differentiation between the offered stock, the gains are in size and it logically leads to a few players in the market so I doubt that the independent butchery has to be butchered and won't die of natural causes due to high costs or because a few of its partners are having a bad year.