A physical disc that stores the same data that could be stored on a small fraction of a microSD card. The people truly preserving copies of media are the people that buy a copy and create an mp4 out of it (obviously difficult to do given DRM). With a disc, you need a BluRay player that can play the disc’s region. BluRay discs do have a lot longer lifespan than flash memory (unless you scratch or break the disc of course), so they do have that going for them.
A physical disc that stores the same data that could be stored on a small fraction of a microSD card. The people truly preserving copies of media are the people that buy a copy and create an mp4 out of it (obviously difficult to do given DRM). With a disc, you need a BluRay player that can play the disc’s region. BluRay discs do have a lot longer lifespan than flash memory (unless you scratch or break the disc of course), so they do have that going for them.