Google Play Books

• Google Play Books allows users to access ebooks, audiobooks, and comics.
• The platform's app has been downloaded over 1 billion times.
• The app has a rating of 4.2/5 from 1.57 million reviews.
• Google Play Books launched with thousands of titles including many bestsellers.

Scribd

• Scribd is a service that brings together the best ebooks, audiobooks, and journalism to readers.
• Scribd has over 150 million hours in reading and more than 1 million paying subscribers.
• The service's websites experiences over 100 million unique visitors per month.
• Scribd employs people from over 20 countries. 
• A subscription to Scribd costs $8.99 per month.
• Lastly, in 2017, Scribd had an estimated revenue of $50 million. 

Other Players

• Other major players in the audiobook market include Barnes & Noble, Playster, Kobo Audiobooks, MK Audiobook Services, Downpour, BookBub, LibriVox, and OverDrive.
• Other major players in the ebook market include Smashwords, Rakuten Kobo, Blurb, BookBaby, Barnes and Noble, Archieboy Holdings, Booktango, and Lulu Press.