Externalising the Economist's Ethcs

The Economist is against CSR: the business of business is business and the pursuit of ethics is at best a distraction; what is ethical is market-driven behaviour. But markets are riddled with externalities – externalities are things which you don’t pay for, but get anyway. Some are good, some are bad, but there are very few markets free of them. So is it ethical to promote a free market system which is riddled with externalities? Is it ethical to sell something which is broken? The Economist thinks so.