Why stop there? Why not just stop worrying about files and folders, and just think about documents, pictures and videos instead? Why should I have to care about the low-level filesystem at all?
Cue iOS.
Cue iOS.
Which was a nice experiment which proved that it didn't work. You know what you can't do on iOS which most users want to be able to do?
Yeah. Work with the same document from multiple viewpoints, or applications. You can't work with documents across applications on iOS because you supposedly don't have files.
Like I said: A nice experiment, but it proves that "no files" only works for the simplest of use-cases and limits the ability to work with data beyond the limits that people reasonably expect to find.