This is an amazing idea, with many potential use cases, but I feel like, for the layman, a major use case of cloud storage systems like Google Drive and iCloud is the ability to access the same files from multiple devices. This, while being a pretty cool system for backup and restore (and very economical!), is not really as much of a concern for the average user of Google Drive and iCloud, because based on what I've understood, it doesn't allow other devices to read data from the cloud for local viewing. Then again, I might be wrong, and it might be pretty useful for the average user.