Let me guess, you work for Roxio?
You certainly are entitled to your opinion and many (including me) would agree with most of the points you raise. The issue here is not that you don't want to buy Vista...we all understand that. The issue here is that Developer Kits, Beta Releases, Development Forums etc etc etc have been available for Vista for nearly 2 years. Roxio has had more than enough time to prepare the patches necessary to run under Vista. They are a very big company with a plethora of deveopment staff who are probably focussing on one thing at the moment.....getiing Version 10 out with Vista support so everybody needs to upgrade!!!
So this is the real reason they are late. The development team have slipped a little on the schedule to roll out Version 10!
I really hope that I'm wrong...but I guess we will see.