Sky encrypts its content, and its subscriptions are certainly enforced by the whole legal system. Try forging some Sky cards or even using a personal account in a public setting, such as a pub, and you may well find out....
You're missing the point. The point is that it's possible to deliver subscription-type models for broadcast media without needing close ties with the state. Public broadcasters like the BBC could use the same type of encryption as Sky, for example.
> "The BBC has police to enforce its subscriptions - a model not easily reproduced by private companies."
If you're going to reply, at least consider the context in which the comments were made. The original point I was responding to was that subscription models only work in state supported media outlets. My assertion was that Sky proves that subscription models are possible outside those restraints.
Furthermore, even if there was a case where a company was not supported by the law, subscription models can still exist. There are examples online of subscription services for illegal content. One could argue that Usenet subscriptions in the broadband era fall into this category, the chances that people are currently paying a monthly fee to access the discussions is somewhat slim.