I think the appeal of blu-ray today is for large amounts of long-term storage.
For you or I who just save the files we're interested in, it's not that big of a deal. For the archivists who provide those files, it could be significant.
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I've been actively avoiding it forever, but my peers are all-to-eager to give up any control or ownership of anything.
It's really a cultural problem, and most of the people receiving the short end of the stick aren't realizing it.