Dropbox can still win. First, have you tried the Cloud Drive UI? It's barely hackathon-level quality. They have basic photo browsing, which is nice, but the D

Dropbox can still win. First, have you tried the Cloud Drive UI? It's barely hackathon-level quality. They have basic photo browsing, which is nice, but the Dropbox UX is orders of magnitude better at the time of writing. Second, a lot of people use Dropbox to share files. Amazon's service is currently about back-ups. They're somewhat different use cases, and sharing is arguably a harder problem than backup because the sharing experience must have much less friction to succeed. So Dropbox is already years ahead of Amazon in this regard. Third, storage at scale is still much cheaper than what anybody is charging. A 4U of RAID 5 SATA drives costs quite a bit less than Amazon's $59/yr/TB price point. (I know Cloud Drive is "unlimited" at that price, but survey data suggest to me most users have less than 1TB of data or unwilling to upload that much). While Dropbox purportedly uses S3 heavily, S3 is about $360/yr/TB. Clearly Dropbox must have storage hedged with something else to back their Pro service (even if that tech is still under development). Dropbox can, with high probability, meet Amazon's offering here, and they'll likely blow Amazon's UX out of the park.