There are two reasons. One is that when you negotiate it, it is taken account of by the industry, but that doesn't cover the whole terrain; as a result, you will end up with examples of the kind I cited of Films Rachel, which was a dispute between a producer and an author. This was an unsigned film. It wasn't something that was taken account of by any collective agreement or contract arrangements.
Second, clarity in the law lies at the heart of a sustainable revenue stream when it comes to creators. This is a terrific opportunity to ensure that there is clarity. It doesn't add complications, but it helps enormously going forward.