I agree with you, WmAX (geez, that's at least twice already!
). SACD was a result of Sony's desire to create a new revenue stream to replace the money lost when their part of the CD patent expired. As Sony & Philips owned the format, they received a royaltie on each disc. Sony hoped DSD/SACD would catch one: if it succeeds, they're sitting in clover again. Very few of Sony's proprietary technologies of late, the Playstation aside, have been really successful. But if DVD-A takes off, then Sony is SOL as they don't own the format.
I wouldn't mind seeing both survive. SACD is a little more user friendly while DVD-A is a bit more flexible. There's room on my rack for both discs, but is there room for both on store shelves? Hard to say.