In many cases this would be true. I think people would be a bit shocked if every pound of steel or concrete they bought came with a carbon tax attached, for exa

In many cases this would be true. I think people would be a bit shocked if every pound of steel or concrete they bought came with a carbon tax attached, for example. But in the case of dishwashing vs. hand washing you are already paying for the decreased efficiency in the form of your water and heating bill. The issue is that most of us have no way to measure the relative hot water consumption of either, so we’re left with the heuristic of “more convenient is less efficient”.