Huh, didn't know Scribd had changed focus to become an E-book service. My impression of Scribd has long been that it's a piracy-pdf site.
I don't want to subscribe to Amazon's service, and have very little expectations for Scribd.
I'm amazed that the investors doubled down on such a poor end user experience, but I guess they are seeing good paying customer growth. Paying customers growth will fade away unless the end user experience is fixed.
Sunk cost fallacy.