But there is a cost of living crisis, I agree the supermarkets are the villains, but they are the main places to buy, they have killed off most of the opposition who cant compete. Intensive farming comes from farmers working to a price to suit the masses.
It can be somewhat balanced out by less waste and/or the food being of higher quality meaning that portion sizes don't have to be as large. Took us a while to adjust to some things - even something as simple as a chicken from the butcher we use, when you look at it, it looks so much smaller than the plump things you get in the supermarket, so you think it won't go as far.. yet, it actually goes further because it is not full of water and also has more taste to it. Even the veg can be significantly different.
KFC comes to mind, places like that just want cheap cheap cheap, I think they, and the others, should have to buy free range chicken and then see if their business can survive. All the kebab shops are probably running on badly produced meat as well. Might help cure the obesity crisis in the process.