It’s important to note that only some copyrighted works can be accessed for free using the legal options, I’m a member of probably a dozen overdrive supporting libraries and still frequently find titles unavailable for loan of any kind.

I’d love to see an analysis of what % of books are available via libraries around the globe.

Also, the whole DRM thing is a massive pain, audiobooks especially are terrible at allowing side-loading onto a consumer friendly device (such as an MP3 player).