One of the most revolutionary formats to come into existence in the world of technology has to be DVDs, which have superseded video tape to the degree that nowadays it is rare for anyone to even still own tapes, tape recorders and tape players. DVDs offer a high level of performance and storage space for relatively low cost, which is why they have become so prolific and popular in recent years.
There have been fears and ideas that DVDs will be superseded themselves at some point soon, but this looks unlikely for a few reasons. One is that DVDs have remained popular for a long period of time, and the fact that they are still popular at the moment indicates that there is not much of a market to improve upon or get rid of the format just yet. This is despite new technology such as Blu-ray discs being available, as these newer technologies are seen as being just the same as DVDs, but with slightly higher definition and more disc space.
In addition to this reason, many people think that normal DVDs are expensive as they are, and the reason that people have been slow to pick up Blu-ray discs at all is due to the even higher cost. Many people prefer to download, legally or otherwise, their films, which may suggest that one day DVDs become superseded by pure digital data, and that our films and music will cease to take physical form at all.