I think the thing is that tech firms constantly come up with innovations, that we don't really need, but are nice to have. They do this, for the obvious reason, to make money. However we don't take to all of them, hello laser dic , mini disk, beta max.
I see yesterday the launch of the icloud, which will charge you money to access the stuff you have already bought off Apple, now as hard as I try I cannot see any advatage to the personal user as anything you are going to access will take time (maybe a lot of time) to upload.
Business applications are obvious, however as Sony prove a 3rd party is no place to keep things you find precious.