> You can move them around, read to them, write to them, execute them...
That functionality depends entirely on the file system and the file in question, as much as the operations available on an HTTP resource depends on the verbs that the resource implements and how it implements them.
Also, a file system will typically not execute your files. Nothing stops you from executing an HTTP resource in the same manner. Say,
Now think about what the browser runtime can do with "files". Well, next to nothing, because the browser doesn't have access to a filesystem.
For a browser to communicate with a filesystem it has to do so through HTTP and only in a very limited way.