Oh dear I didn't realise Dropbox had invested all of that time and money moving into their own data centre. From my perspective the future of Dropbox looks bleak. Mass storage with Amazon is much cheaper [edit: from a consumer perspective]. I know Dropbox has superior software that works (as opposed to the poor apps by Amazon and Google) but I imagine a lot of people are like me i.e. Store most of the stuff at the ch…
Not at all, cost/TB of S3 is much higher compared to what you can build provided you know how to build it yourself.
There's an infection point somewhere at which owning your own hardware and paying someone to acquire, build, manage, and maintain it becomes cheaper than renting from someone who does the same thing at scale and makes a profit off of it.
Dropbox is probably there, but many small web apps are not.