QUOTE
It's no big deal. Just like with DVD+/-R discs and drives. The average person just goes and gets blank DVDs without worrying about the format. In 10 years, or a lot less, the average person will just get a High Definition movie without worrying about the format.
It is a big deal actually, because this isn't relating to "record" functionality, it is related to "playback".
Say a new format comes out in 10 years, we'll call it UberDVD. That means the UberDVD player will need backward compatability for DVD, Blue-Ray, and HD-DVD. Say there is also a competiting new format, RadDVD. That means a future dual-format player will have to support 5 different formats. It just keeps adding on top of each other. This means that future players will probably not support everything, and you will have to be carefuly which player you buy, and hope it supports all of the formats in your movie collection. OR, like they want you to do, you have to buy another copy of the same movie you own to work on the new players!