At a risk of getting into politics, the idea of having people sharing infrastructure governed by contracts sounds very good from the point of view of lawyers and accountants but is a pain in the butt from the point of view of engineers. Speaking as an engineer, that is. However, since we* are run by lawyers and accountants that is what we get, and a damned bad job they're making of it to.
Back on topic now.
*we as in the UK, not we as in ntl