Mr Varian argues that this overcomes the free-rider problem, a particular pain for makers of online content because it can often be reproduced at zero cost.
But if we want to build on this structure and solve the free-rider problem, there are three fundamental flaws in the current system that need to be corrected.
Many if not most Tory MPs believe that Britain should try for what amounts to a free-rider membership of the single market (ie, staying inside while spurning EU rules on employment, the environment, fisheries and the like).