Hello, I'd love to jump in here and offer a few thoughts.
With media files, cloud = media stored somewhere else...the internet, server farms, JRiver's Performer. It's the future. I think there is some danger in not seeing the forest for the trees (which might translate across domains to "not seeing the cloud for the files"?)
We, the JRiver Users/Interact Galactic Citizens, don't use the cloud much because we have great personal media collections on local storage and like it that way, for good reasons - content organization, top notch sound/video quality, security, etc.
However, everybody else I know uses the cloud for media now. Most people don't want to deal with file management, too much hassle - storage cost, backup, format, interface, etc.
I think this is another sea change in media format. Subscription streaming is the future of media consumption, and the people left managing media files are going to be a small minority of home media consumers.
Sorry for all the metaphors. My head is cloudy this morning.