There are some plugins that add an option to the action links in the file column for cloning/copying/duplicating a post/page/media item. So it would look something like the attached image. Not only would this make it easier to copy media items, it would also help with another enhancement request I submitted recently. As far as I can tell, you can only access the duplicate media item link when open an item from the grid view. There's not an option to duplicate a file when you open it from the list view. Our users won't know to go to grid view, open the file, and then duplicate it.
Yes - the enhancement request is to add this option in the list view as well. Whether it's via a right click or a text link in the action links for a file, it would be nice to have the options in the list view as well