Pretty much what http://cloud-elements.com is doing except they needed a few millions in funding to get there :)
:) plus they push all your data via their servers. This transfers directly between client and eg Dropbox.
Also you have to appreciate the skill that it takes to make something appear more complex than it is, just to be able to appeal and market it to the Enterprise customers.
Of course
600$ a month? What?
I still can't believe people pay such astronomical prices for that.