DVD+R9: not really a hot product

Whereas most of the current DVD burner are supporting +R9 format, it does not seems to be a success-story for the +R9 media. This might be first due to the really high price of a +R9 media.
Why so high? Because DVD media manufacturer are facing challenging conditions, with high production cost coupled to low yields. Some manufacturers are already thinking about dropping double layer format media and to concentrate on HD-DVD and/or Blu-Ray compatible media.
However, if you conclude that double-layer media are dead, you are wrong. In theory, DVD-R9 media, also known as DVD-R DL, is much easier to manufacture than the DVD+R9 media; so even it was released later, the DVD-R9 media might win the fight, and satisfy consumer criteria (quality, price).