I'm not so sure their long term view of the cloud is necessarily "file based" (although it's debatable what that means specifically).
Dropbox was originally IIRC developed by a college student who had the problem of sharing files easily between his home and college computers, dropbox was a solution to that.
In the long term however , they have more or less solved the basic problem of syncing files and used this to provide revenue to move into the future.
I see a good business model for them could be to provide a platform for developers to build things that may in the background be syncing files (I think it'll be a while before we have filesystemless servers especially since unix is build around the concept of files) but from the end user point of view are providing services like photo / calender sharing etc.
Dropbox was originally IIRC developed by a college student who had the problem of sharing files easily between his home and college computers, dropbox was a solution to that.
In the long term however , they have more or less solved the basic problem of syncing files and used this to provide revenue to move into the future.
I see a good business model for them could be to provide a platform for developers to build things that may in the background be syncing files (I think it'll be a while before we have filesystemless servers especially since unix is build around the concept of files) but from the end user point of view are providing services like photo / calender sharing etc.