They are just announcing this? That seems small for someone who wants a lot of movies. My computer HD is 2TB and I got that last year!
Sorry, misread that. Missed optical discs.
Not sure I would trust them over time however, as they can warp, get scratched, crack fairly easily etc.
For archiving important docs, I buy 64GB flash drives and put them in baggies in a safe to keep the moisture out. And because they are relatively inexpensive, one can do this multiple times so if there is one failure, you have another copy.
while your statement about your computer’s hard drive is true, so too is one of the lead in comments:
“Optical discs have excellent properties to protect themselves against the environment, such as dust-resistance and water-resistance, and can also withstand changes in temperature and humidity when stored.”
between computer hard drives and optical disks, the term “excellent” in the statement above can be translated as “superior”, which is why digital archivists will be interested in the development