I don’t seriously think, with all that production requirements, that flash memory could ever reach the price of optical media. The durability and storage of flash media is questionable in my point of view, and so is optical. For now, I still rely on hard disks the most, and I’ll keep changing and transferring every 5 years or so to keep my data intact, but even with a big demand and supply of hard disks - the price per GB is almost 5 times more expensive than optical. Not to mention that the price per GB for flash is almost 40 times more per GB for hard disks - making it in total 200 times more expensive than optical disks. Flash memory can’t always be trusted to hold its data - and neither can any media - but as its density increases, corruption is more possible. So called solutions such as redesigning the flash media from Charge-Trap mode to Floating Gate mode have “solved” the problem, according to Samsung, but I really do wonder how small the etching process can get, and how this adversely affects rewrite-ability and data retention. After all, some people have already experienced corrupting/dying MP3 sticks and mass storage devices. Even if it were MLC flash, it’s rated for 100,000 rewrites. Say if the complaints came 4 years after manufacture, that’s at least 68 rewrites in the same spot in A DAY! Mine died within 2 years … and I’m sure the flash didn’t get such a workout - and considering most controllers have flash levelling technology which aims not to wear out a single spot too many times - it just seems the stated lifetime just isn’t true.