@ El Nino
I have always thought that was one of the most attractive aspects of the 360. While it did hamper devs that wanted tons of space for games, no one had a crystal ball and could have predicted that Sony would literally pimp their PS brand to further their Blu Ray dream.
I eventually bought the add-on, but I had a choice. I didn't have to jump into the HD race. And truth be told, I got a steal of a deal and will still be watching HD DVDs when the format dies.