Bandwidth really isn't all its cracked up to be (unless you're pirating HD-DVDs) ... even if a 100 megabit/second residential connection did exist (it doesn't to my knowledge), there is absolutely no way you'd be able to pull that kind of data through the Internet as it exists today... no how... no way. I'd gladly trade 1 or 2 megabits/second off my current 5 megabits/second connection to have lower latency and faster uploads.
To date the best internet connection I've had was in Atlanta, GA where BellSouth ran a CAT5 cable up the side of my apartment... it was feeding off of fiber less than 100 yards away... no DSL modem... just an Ethernet port on the wall. Because BellSouth was the sole provider of phone and cable TV for my apartment complex they had to provide high speed internet as well... and they apparently just threw together some plan at a moment's notice... the one time I had to call for support, the technician refused to believe I didn't have a DSL modem... maybe I was the first with that type. At the time I wasn't smart enough to run a bandwidth test on my connection... man, I wish I had. Looking back I think I had an uncapped up/down connection.
*edit*
And yes, I think the technology you mentioned is pointless.