I think that how intellectual property gets monetized is evolving, in many areas. I believe that's a key point to be aware of here. How the author benefits, or is compensated for their creation may be different now, than what it was previously.
The music industry - if I am not mistaken, has evolved to where artists tend to make more money from giving concerts now, as opposed to selling albums. This has inverted from the 20th century era, where album sales were everything, and concert tickets were cheap. Now, the day an album is released, it is almost always available to stream on youtube, for example for free. If people want it for their iPhones or similar, they can then purchase it, but a lot of people get services like Spotify - where they pay a fee to stream a lot of stuff. The artists presumably get compensated to a small degree, but the bigger money is on concert revenue now.
A lot of this I suspect evolved from the Napster era, and people wanting to listen to music (for free). Right or wrong, it seems clear that the model has changed in this industry, and is evolving in others as well. There are some musical acts that have resisted this trend, but I believe that it has been mostly to their detriment. It keeps their name and work from being "out-there" widely seen by the general public, and, unless they are already well-known, most people won't find out about them, or be able to really appreciate their legacy of work.
Its a fast moving world, and much is changing faster than we can keep up.
