With the intention of trying to protect endangered species, there are numerous laws banning the sale of these species, or parts from endangered animals. But could these laws actually be hurting endangered species, in some cases? If the sale of these endangered animals was allowed (albeit regulated and tracked) there would probably be commercial ventures that would breed these animals to supply the demand. Then that might put less pressure on poaching in native habitats. It seems counterintuitive to ban something when there's a big demand for it. Why can't commercial breeding supply that demand? The animals might no longer be endangered if lots of people were breeding them.
Ask all of those tree hugging pot smoking Kalifornians and their unintended very negative impact on their beloved and very endangered spotted owls. Who will now win? The endangered spotted owl? or pot smokers?
Because it creates profit orientated stupidity. See, for example,hen harriers and grouse. The profit motive ensures death of species, often to maintain an alien species