I think we should place a QR on every product label, and scanning that QR takes me to data about the product such as its historical mass/volume, cost, and unit price, as well as its brand owner right on up the chain. I see you, Nestle. Of course, giving customers information to make an informed decision is Bad For Business.
(I am sure that, since this is controlled by manufacturers, they will use this to remove as much information as possible from the actual product labels.)