Return_of_the_STAR wrote:...the uk Supermarkets have the option of buying both US and EU chicken and letting the customer decide which one it wants?
Not the point being made, I know, but this is such a rubbish argument that people bring up. For one, that choice won't exist for a lot of products. When buying fresh meat it probably will, but what about ready meals, the chicken on pre-made pizzas, or the chicken you buy in a fast food restaurant? These are likely going to be whatever is cheapest, and the end consumer won't have any choice if they want those products.
Even when consumers do have the choice though, people will buy the US option even if they are against it. This could be for the price (being poor is a great motivator to compromise on other values), or it could be because they don't want to put in the effort of vetting everything they buy from the supermarket - entirely reasonable positions to hold. People buying a product isn't proof that they agree with its methods of production. People make lots of very reasonable assumptions about the quality of something they are buying, and it's unreasonable to put the onus on the consumer to check every aspect of what they are buying.
Then there is the supposition that it's even okay for the market to decide this sort of thing! Animal welfare is something that should be legislated on and enforced, not decided by market pressures. We don't let the market decide whether it's okay for people to be used as slave labour on farms by putting slave-grown products up for sale against more expensive products made by farmers who get paid - we just ban slavery outright.