> That complaint is immature

That's a bit rich for you to write -> this thread is addressing a practical problem with consumer goods, and your post is a theoretical, spherical car in a vacuum description of how ideal market should work, and falls apart in the real world.

If the model worked perfectly, we would never have problems with slave labour in supply chains because ~0% of consumers are willing to buy them. The fact that we do, indicated that consumers are not able to enforce their preferences, for example because companies lie with no consequences. And if they can lie about slave labour, then they can lie about anything else.