Blu-rays sale percentage tracking

[Cypher1980]

Interesting excerpt from Wikipedia

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In 2006, a new format called Blu-ray Disc (BD), designed by Sony, Samsung, and Panasonic, was released as the successor to DVD. Another format, HD DVD, competed unsuccessfully with this format in the format war of 2006–08. A dual layer Blu-ray Disc can store 50 to 100 GB.

However, unlike previous format changes (e.g., audio tape to compact disc, VHS videotape to DVD), there is no immediate indication that production of the standard DVD will gradually wind down, as they still dominate, with around 87% of video sales and approximately one billion DVD player sales worldwide.

In fact experts claim that the DVD will remain the dominant medium for at least another five years as Blu-Ray technology is still in its introductory phase, write and read speeds being poor as well as the fact of necessary hardware being expensive and not readily available. Blu-ray players have struggled partly because the MPEG I-frames stored on DVD discs were based on JPEG, which carries DCT information that can be exploited to improve interpolation for higher resolutions

Consumers initially were also slow to adopt Blu-ray due to the cost. By 2009, 85% of stores were selling Blu-ray Discs.
A high-definition TV and appropriate connection cables are also required to take advantage of Blu-ray disc. Some analysts suggest that the biggest obstacle to replacing DVD is due to its installed base; a large majority of consumers are satisfied with DVDs.

The DVD succeeded because it offered a compelling alternative to VHS.

In addition, Blu-ray players are designed to be backward-compatible, allowing older DVDs to be played since the media are physically identical; this differed from the change from vinyl to CD and from tape to DVD, which involved a complete change in physical medium.