Authors deserve to be paid for their work, just as developers do. You have the option to buy most audiobooks without any technological restrictions. What more do you want?
This is great for me, I've bought hundreds of audiobooks in my life and my family had a collection of hundreds when I was a child. The original collection was thrown away by movers many years ago and my collection went missing along with other luggage when being shipped back from Kenya a couple of years back.
I don't think its immoral to download things I've paid for (often twice or even three times over if I bought it on tape, then CD, then on audible) and have a DRM free copy.
Authors deserve to be paid for their work, just as developers do. You have the option to buy most audiobooks without any technological restrictions. What more do you want?