Would it be possible to ask my bank to stop me from buying certain objects or products which conflict with my ethical standpoint. This would mean that the story of each product would have to be known. Hopefully this would enforce some kind of understanding over what is alright to buy and what is not . The conditions for restrictions could be set my the customer. What would it mean if the bank had an agenda and could boycot certain companies like Nestle. So your card would recognise when there was a nestle product and would not allow you to buy it with card.