It's also where you have a huge variety of content. You raised the subject of education. In the educational context, you have digital licences, potentially, that allow people access on a per-user basis or sometimes on a per-use basis, on a transactional basis that amounts to a certain amount of compensable copyrighted material. You then potentially have other subscription services, and you have a tariff licence that exists in both cases, which covers other uses.
In all of these cases, you'd have to amass...to know what is all the potential n or openness of content, and then the various mechanisms they're using to draw on that. I think what you probably found in the course of your study, and what we often find, is that the ubiquity of copyrighted content means we're accessing it in dozens of ways through dozens of providers, and each one of those has a remuneration stream that may or may not be governed by a tariff or a contract or a subscription fee, and it may be per use, per year.