With prices of SSD falling each year as well as increased storage capacity in both HDDs and SSDs. I don't think discs will be relevant in the next decade or so.
Digital download services seem to be king these days with nothing to really slow them down, other than data caps and weak infrastructure . Right now our concern should not be on storage media or what have you, it should be on ISPs being able to bring people high speed data without caps and at a reasonable price.
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