All the examples you gave are examples of not owning.
GOG games are DRM-free, so you will only lose ownership, if GOG ceases to exist and you don't have a local digital copy of your purchase. This would be similar to losing or breaking a DVD, only that you can get as many replacements as you want as long as GOG exists.
I don't know any example of legally aquiring DRM-free digital copies of movies or shows, but I think Bandcamp would be the music-equivalent for that.