[lozenge]

What's the consumer preference re child labour? What's the consumer preference re slavery or conflict diamonds? What's the consumer preference re leaded gasoline? How about factories polluting rivers, as was common in the US not that long ago? Should we have told people to prefer undyed fabric because it would create less pollution?

Let's not limit society to just what "consumer preference" determines. We should be using our institutions (ie the government) to make things better.