Except that DropBox is still cheaper, has a good app, stores file revision history, syncs across various operating systems. Dropbox always seemed to me to be a

Except that DropBox is still cheaper, has a good app, stores file revision history, syncs across various operating systems. Dropbox always seemed to me to be a bit more sophisticated product than just "I want a backup in the Cloud" type thing, and I doubt anyone who's using it more than just a simple one-computer/one-OS backup system will leave. And I guess it gets most of its revenue from business accounts anyway?