If you haven’t seen it, The Good Place is a great show and they discuss this basically. Should we be responsible for tracking the output of every company before we buy any product?

(The answer is: of course not. We don’t have enough time in the world for that. The correct solution is regulation and taxing for negative externalities during the production process. If the cost of negative externalities is built into the cost of the product, then it will be less benificial to purchase a product with a dirty supply chain.)