It did seem a bit odd but I think the main idea is that storing big, non-text values has traditionally been seen as hard (expensive, unreliable, prone to security hazards, etc.), not without cause given how bad most enterprise IT departments are at it. Now that it's available as a simple, highly-reliable pay-for-usage service, app designers need to reconsider that bias.

20 years ago, a durable object storage solution like S3 meant buying an EMC Centerra For über dollars and maintaining multiple data centers, etc.

Now, you need a major credit card.