This paper questions the dominance of market-based mechanisms (MBMs) as the primary means of climate change mitigation. It argues that, not only they are unsuccessful on their own terms, but also they actually make the task more difficult by the unintended consequence of normalising the act of polluting and crowding out alternatives. The theoretical contribution of the paper is to draw a link between two bodies of literature. The first is the business ethics literature on the dominance of market-based rather (...) than direct regulation, and the second is the literature on market ethics, particularly the work of Michael Sandel on how MBMs crowd out non-market norms. The empirical contribution is to use the international maritime transport sector to illustrate the way market-based regulation renders alternatives such as direct regulation and supply-side approaches invisible. (shrink)