A couple of thoughts come to mind… in no particular order…
There is a lot of decent land in this country, and a lot of acreage usable for a very wide range of agriculture. There is a lot of that usable acreage that gets planted in corn and soybeans. Just drive through the midwest and it’s no secret. Could that be repurposed? Of course. When the money is there, it will happen. If the money isn’t there, it won’t. There are quite a few small operations with a bend towards the sustainable that have started in the last decade or so and there will likely be many more. It is still a growing movement. Beef, hogs, chickens, eggs, vegetables, fruits, any of it is fair game for those wanting to provide for people wanting the types of products you mention wanting. It’s business. And that’s not a bad thing.
I still see a line of reasoning in your questions that makes me wonder if you have a handle on real live agriculture, not the stuff you see in pictures, on TV, in documentaries, but real life, seen with your own eyes. You seem to be seeing an awful lot of black and white.
If I could illustrate, “black” being a zero and representing a cow raised in total confinement from birth to slaughter, never on grass and fed the cheapest and most polluted Chinese imported feed possible to put on weight for slaughter, and “white” being a one hundred and representing the ideal organic environment for a cow from birth, always on the best of organic chemical-free pasture after being weaned off of it’s mother’s (organic, chemical-free) milk, of course, you don’t seem to have any room for a 90, an 80, or even a 70. The real world is just not as black and white as you seem to paint it. It’s just not. Gray areas abound. The actual black and white farms are pretty rare.
A case in point is a cattle farm right up the road from me. The cattle are raised on grass. (Black Angus. Very nice looking cows.) Seriously, if I took a picture, you’d be hard pressed to find a nicer pasture for cows anywhere. There is no reason to supplement them with a whole lot of anything. Pasture land is cheap around here so just letting them eat and grow bigger doesn’t cost a whole lot. There is no need to feed them large amounts of grains and they do not get a lot of grain during their lifetime. They actually get very little. But they’re not “organic”. They’re not labeled as “grass fed grass finished”. They’re considered standard agriculture here. They’re probably a 90 or a 95 on the scale and may in reality be better than some of the stuff on the Walmart shelf labeled “grass fed organic”.
FWIW, I share a lot of your inclinations towards very high quality stuff, both animal and vegetable products. But I also see the business end of farming a little more up close and personal than some. There are some people touting their “organic” labels that barely eek by. There are even times when the government will sanction them using that organic label on stuff that’s NOT organic. There are loopholes, unfortunately. But there are also some “standard agriculture” type farms that have really taken a lot of positive steps to raise the quality of the things they’re producing that never even try to bring about the “organic” or “grass fed” label. They just quietly go on producing their crops and selling them as just what they are, decent stuff without the fancy labels… kinda like my neighbors.