In Switzerland where you can tell on every piece of supermarket meat what kind of farming/standard it is trough a easy to follow colour code and some kinda Trustable labels, you very well see customer pick the more expensive ones.
Same thing in Austria, clear labelling, good availability, people are buying it.
Nobody in Spain does because none of their supermarkets has any concept for labelling the meat standard
So it's easy to say nobody would if they didn't really try
Most consumers don't care where their meat comes from.
Meat is a status symbol food. Most consumers want it as cheap as possible so they can consume as much of it as possible. Because it's a status symbol food. Eating meat every night is seen as a status symbol.
Kurzgesagt had a very interesting video[0] about the fact that it wasn't really that much more expensive to make sure we ate torture-free meat.
[0] https://www.youtube.com/watch?v=5sVfTPaxRwk