Limited-liability, privately owned joint-stock companies are the core institutions of modern capitalism. These entities are largely responsible for organising the production and distribution of goods and services across the globe. Their role is both cause and consequence of the revolution in the scale and diversity of economic activity that has taken place over the past two centuries.

Almost nothing in economics is more important than thinking through how companies should be managed and for what ends. Unfortunately, we have made a mess of this. That mess has a name: it is “shareholder value maximisation”. Operating companies in line with this belief not only leads to misbehaviour but may also militate against their true social aim, which is to generate greater prosperity.

I am not the first person to worry about the joint-stock company. Adam Smith, founder of modern economics, argued: “Negligence and profusion?.?.?.?must always prevail, more or less, in the management of the affairs of such a company.” His concern is over what we call the “agency problem” – the difficulty of monitoring management. Others complain that companies behave like psychopaths: a company aiming at maximising shareholder value might conclude it would be profitable – and so perhaps even its duty – to pollute the air and water if allowed to do so. It might also use its resources to obstruct an appropriate regulatory response to such (mis) behaviour.