> If the majority treated meat as a luxury, a weekly delicacy instead of daily staple for example, no one would have to give up meat if they didn’t want to and could afford to buy it.

That's assuming that supply remained basically the same.

If demand for meat dropped to the point where people were only eating it a once or twice a week instead of daily, supply would dry up to the point where it would actually become a rare delicacy and most people wouldn't be able to afford it much.