Digital media only lasts online if it is saved by others. Once the original website is gone, so is anything nobody copied. There are many sites and data that no longer exist (many geocites for example or tvshowsondvd) that were not saved and are gone. Internet archive works to a degree but still does not always catch everything. Also, it is not about “save physical media save the world.” It is the question of how much control and censorship will the studios have without physical media. Right now if Disney edits (and don’t kid yourself, they do like their squeaky clean image and will edit if they feel like they can) a film or puts it in their “vault” it can still be seen and shared through previous copies. If it is regulated through streaming and digital media and they decide to take down their films on all these platforms then nobody can see them. There is no “backup” in this case. The studios have complete control. While I am for physical media and I feel I have made it clear in previous posts. I have no problem preserving media digitally as it is probably more practical when considering space and degradation that film, tapes, etc. take up. The problem is currently that the studios have full control and censorship, even more so than in the past, and studios, especially some of their executives, have no sense of history and cannot always be fully trusted with that much control. Take note this is not a small concern and not something to look down on. Just look at the demise of filmstruck and some of the responses that got.