"If meat production was all done humanely, then a large section of society wouldn't be able to afford to eat meat"

We might eat less meat, but you can buy meat today that is humanely raised for marginally more expensive than the factory farmed stuff. And that's with the overhead associated with small producers in a niche industry. If we were to make humane standards universal, cost savings would obviously follow. Just look at Europe.

This is a solved problem that only persists due to mass American indifference to how our meat is tortured and poisoned before we eat it.