Blu-ray's are still reasonably common, though they are slowly disappearing as well and I don't think there will ever be a successor. Fact is that write-once rea

Blu-ray's are still reasonably common, though they are slowly disappearing as well and I don't think there will ever be a successor. Fact is that write-once read-many is just not considered a very valuable property by itself, and as rewritable storage is becoming cheaper (if only by economies of scale) it'll displace them.