Quad was pretty low tech and lacked the ability to replay many discrete hi rez channels. Does anyone here really think MC is going away? Unlike the days of Quad, MC pervades nearly every home nowadays in the form of home theater. Guys that ten years ago owned boomboxs now are buying HTIBs. MC may not be taking the music world by storm, but there's been a paradigm shift to MC for HT. Even your average "Joe Sixpack" now equates surround with good home theater.
I haven't heard the 10.2 system, but again, the "experts" who have say it's amazing. At any rate, even if much of the world lacks electricity, so long as we have big screens, air conditioning and drive 9 MPG suvs, I doubt the extra $25 per year of power 10.2 requires will be the deal breaker.
Expensive? Probably. I suspect many would get good results with ten modestly priced speakers, but then there are also people who spend $250,000 on a
2 channel system. So I guess the cost is all relative.
Will 10.2 catch on? I don't know. There are quite a few people who use six or seven speakers and a sub. Will they splurge for three more? I only use 5 (plus 2 subs) right now, so I can't say. But if there eventually is a lot of quality software in 10.2 I'd say it has a good shot.