Not the OP, and I don’t actually know, but paid streaming services differ from YouTube in that everyone who accesses the content is paying for the service. On one hand, you can validate that everytime a video is served, it’s served to a paying user. On the other, you are receiving revenue directly from consumers to fund the infrastructure to store and serve the videos.
YouTube, on the other hand, stores significantly more content, for free, and can be accessed for free, without being signed in.
I guess similar to saying at least 10%, to convey that it isn’t 9.5% or 9% but more than that.