One big limitation is that you can only capture the value created on your own farm, but not the downstream effects. There are lots of “prisoners dilemma” food

One big limitation is that you can only capture the value created on your own farm, but not the downstream effects. There are lots of “prisoners dilemma” food production methods where everyone is better off if nobody exploits (eg: salmon runs are not owned by anyone in particular, so maintaining them is a matter for underfunded parks departments, but properly maintained they produce astonishing amounts of delicious food).