AllanDeGroot yeah I agree on that too. Optical media is slow, but even so.
The problem is that optical media is way behind harddrives, if it where to keep up the storage per disc like BD-R need to get to 300-500Gb per disc to be a alternative to harddrives. Most people won't need storage like that but this is needed if we are going to move to say 4K technology for movies and so on. I feel that todays 2Tb harddrive are great, the problem is long term storage of huge amounts of data.
HVD might be a option but it seems the technology is way behind, reason is simple, you only need to increas space of harddrives and you can sell them. Not so with HVD or even with BD-R. The space on optical media need to increas a lot, before people will acceppt it's slow to read back. Only now is BluRay catching on, and this is external players, movies, TV-series and so on that you buy. This is not to expencive to produce. The problem is the BD-R market, expencive, quality problems. And that most people don't need that storge, DVDs and CDs are enough for them. So it won't sell as good as DVDs did back in the day, but even then that took some time to get out to the public.
One option would, at least for now, put the BluRay standard onto the old laserdisc, even if you have to get a external unit to play those LP size optical media. If you could store say 500Gb or more per disc, and it wasn't to expencive to get this stuff, I think it would be a great option for some people. I am not sure HVD will ever get out to the public, it could just be to expencive, complicated and lots of other problems. As with anything you need to get your money back for the research you invsted into the product in the first place.
Today it seems that harddrives, storage in datacenters, streaming information, and DVDs are way more popular than BluRay.