So you've Netflix for video and Spotify for music. What about books? Amazon has blown the doors wide open to their digital library with Kindle Unlimited, a monthly service that gives you access to over 600,000 books and thousands of audiobooks.
For $9.99 a month, Amazon gives you access to their Kindle Unlimited library which you can currently access from any Kindle device and any tablet or phone that is compatible with the Kindle App. For now it will be exclusive to the US with an expansion to other countries in the near future.