I think the "pre-release format war" can be beneficial as it can make both sides work harder to improve their format, but it will be far better to have only one format released commercially. Just compare the quick and huge successes of the CD and DVD formats with the long, slow, painful VCR format fight, the slow and only moderate success of Laser Discs after the fight with CED, and the near-complete failure of both SACD and DVD-Audio.