There are much wider issues that should have our attention

Like reading the background in the links provided, for a start. For instance, the "English Country Music Band" (which is actually the core of a well-known ceilidh band) did a one-off recording session for which they were paid a standard fee. They weren't given the option of any rights to how their music was distributed and didn't know about its inclusion before being told about it. They can't do anything.

One lesson is to read contracts very, very carefully.