A minor nitpick in the article, the $12.99 Amazon prime subscription does not cover their spotify competitor streaming service. I've always thought this was a bit odd given that it does include a netflix-esque amount of streamable video content. If I had to guess, I imagine it's all related back to the royalties situation in music. You do get "Prime Music", but it's not the Spotify competitor, that would be Amazon Music Unlimited. That service is an additional $7.99 if you're a Prime member.

eBooks are also mentioned there, but you don't get a huge library for being a Prime member either. Rather, it's a selection of ~1000 written things (books, comics, magazines) that is constantly rotating. Kindle Unlimited is another $9.99/month. You can do the Kindle library thing as a prime member, but that's one book a month drawing from a similar pool as Kindle Unlimited, which often doesn't have current best sellers anyways.

I guess props to Amazon for being so confusing in their myriad content subscription options that the author couldn't get it right. To get the same kind of all-you-can-consume options that spotify provides across the different media mentioned it's actually ~$30/month. Still strikes me as odd how "cheap" TV and movies seem to be in this model. I'm very curious about that now.