I am not a proffesional photographer,...
I am not a proffesional photographer, just an amateur. But I agree with one of the most important points about all this movement: the proprietary RAW formats effectively make the RAW files a property of the camera manufacturer. If the manufacturer for some reason (like: to persuade the people to buy "new, even better camera") stops to provide the support for the old ones - you are basically on your own, possibly with some help from the enthusiasts. This is not acceptable. All the existing RAW formats should be documented and the new common standard should be adopted. It doesn't have to be DNG (although it's quite good). But whatever it is and whoever creates it, it has to be one, common and open.