Not much to add to what Marc Canter has to say... I agree.
If you'd like to understand what all this talk about openness really means, read it and click on the links he presents. It's that easy;-)
"Today's incumbents will have to adapt to the new openness of the Web 2.0. If they stick to their proprietary standards, code, and content, they'll become the new walled gardens—places users visit briefly to retrieve data and content from enclosed data silos, but not where users "live." The incumbents' revenue models will have to change. Instead of "owning" their users, users will know they own themselves, and will expect a return on their valuable identity and attention. Instead of being locked into incompatible media formats, users will expect easy access to digital content across many platforms."