I think that George's POV -- which is also mine -- is that as the world shifts, the percentage of video distribution which is amenable to multicast, and not well served by unicast, is likely to grow, and it would be a Good Idea to be ready for that situation already when it arrives.
Really? If anything, I'd say quite the opposite. Watching media in the time-slot that someone else has decided on is *so* 20th-century - I can't remember the last time I sat down to actively watch a programme in its original transmission slot. (As opposed to having the TV on as background, e.g. 15 minutes of breakfast news in the morning). I guess multicast to a recording application (or appliance) might work - but essentially my requirement is strongly skewed towards video-on-demand. I have absolutely zero interest in sport of any kind though - I'm given to understand there's quite a high demand for live viewing of that. Regards, Tim.