Butchers and meat markets that sell meat from locally raised animals is what this looks like.
The post above yours talked about this:
> "Small groups of farmers simply can’t afford that and be competitive unless they’re already selling high end organic/free range/etc meat."
It absolutely does happen. It's at small scale with higher relative costs, so it's only profitable as a specialty product. It can't compete with industrially farmed meat on price. This would be the range of the farmer who doesn't mind doing some things a few times a day and perhaps hires a helper.
Growing beyond the small scale requires the capital to build facilities and hire staff to run them while you're getting the operation going. You might need to be cutthroat on price to be competitive with existing players, so your revenue might not be great for a long while.
How much output do you think a farmer and a helper are capable of, versus a fully staffed modern industrial poultry farm?