Most likely the information doesn't reach the consumer because the typical consumer doesn't care.
There are often niche producers who target the small fraction of consumers who care, and market their wares in part based on this. For example, see Fair Trade coffee producers (appealing to do-gooders) or American Apparel (appealing to US nationalists).
Your claim that markets can't transmit this information to interested consumers seems incorrect.
There are often niche producers who target the small fraction of consumers who care, and market their wares in part based on this. For example, see Fair Trade coffee producers (appealing to do-gooders) or American Apparel (appealing to US nationalists).
Your claim that markets can't transmit this information to interested consumers seems incorrect.