Or, probably more relevantly, exactly the same price as the limited-storage tier of Google Apps for Business when the latter is paid monthly, but with 6+ times as much storage, and half the price (again, using monthly rather than annual pricing) of the Google Apps for Business unlimited storage + Vault offering.
Google Apps does, however, offer slightly lower prices with annual commitment, and I don't see anything in the Amazon Zocalo description that makes it clear that it has any compelling features that Google Apps doesn't (it seems like its just a competitor to Drive with enterprise admin tools of the type Google also seems to have in its Google Apps for Business offering, at least at the higher tier, without any of the other things that come with Google Apps.)
And still startups flock to AWS like it's mana from heaven.
I'm intrigued by Rackspace's new OnMetal service, but at any reasonably large scale it's usually a big win to own the hardware (as long as you can afford redundancy).
Also, not sure I understand the "Amazon Prime Video undercuts Netflix" argument. $7.50/mo for Prime vs. $9/mo for Netflix Streaming is pretty much the same ballpark, and you have to pay for Prime up front. I have both (gotta get my free shipping), and I find myself using Prime Video only for the HBO shows.
Remember when you only went to Amazon to buy books?
It is hard to say how they compare on functionality (e.g. versioning, auditing, integration (e.g. Kerberos, AD, etc)). The Amazon web-site is very light on details. It isn't even clear if Amazon has some kind of desktop sync application which is DropBox's bread and butter.
I'd need to wait for a LOT more information on Amazon's offering before jumping ship. Things like versioning (rollbacks, etc) are non-negotiable for many business users and while Amazon's offering might have that the web-site could do a better job letting us know as much.
"You can install the Zocalo client application on your desktop and laptop computers running Windows 7 or MacOS (version 10.7 or later) and designate a folder for syncing. Once you do so, saving a file to the folder will automatically upload them to Zocalo across an encrypted connection and sync them to your other devices. You can also access Zocalo from your iPad, Kindle Fire, and Android tablets."
This post has some more details https://aws.amazon.com/blogs/aws/zocalo-doc-storage-sharing/