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According to some knowledgeable people, A History of Violence is the last movie a major studio pressed onto the VHS format. The reason is simple: VHS is a mostly dead format and most people prefer DVDs nowadays. Seeing a demand for them,  many major studios have been pushing out as much of their catalog onto [...]

A format war occurs when two incompatible versions of a similar technology begin to compete against one another in the market.  In almost every case, one of the two formats wins out in the end, either because of a better marketing strategy or a superior product, leaving groups of unlucky consumers with an obsolete technology [...]