It is very hard to play the game of life – or of capitalism – when governments keep changing the rules. Which they do every time they fear that one of the players might actually be losing. It does not matter if the players’ loss is down to their own folly; the politicians still rush to turn them into winners. They do not want voters harbouring grudges. But in making sure that everyone wins prizes, they sap the very incentives that drive our social and economic progress.