We somehow got away from DRM on audio. We got away from it with audio in part because a typical audio product such as a music single or short audiobook can via

We somehow got away from DRM on audio. We got away from it with audio in part because a typical audio product such as a music single or short audiobook can viably be produced and sold DRM-free at a price so low that it's hardly worth anyone looking for it elsewhere even if they could find it literally for free. Unfortunately, the same economics don't work in most other markets.