Well, the internet probably does need more bandwidth to support Netflix.
And I'm not a fan of QoS to get better streaming video either. But is Cerf giving up on fixing the problems with streaming (and any realtime internet work) that we know about, bufferbloat? I heard about that from Jim Gettys (thanks to a tweet from John Carmack). Here's a two-page intro in IEEE magazine or a (more interesting IMHO) PDF slide presentation with nice graphs and there is other advice and documents and code on that bufferbloat website.
See, the problem with streaming isn't just bandwidth, it's latency, and the variability thereof. We always measure and marketers talk about bandwidth, but only rarely if ever about latency. Thus ISPs don't optimize for it as a rule. The result? You get these occassional 6-second lags and other phenomena and little economic incentive to track them or fix them. (And certain data ISPs are at least mildly incented to look the other way since it protects their VOIP/PSTN revenues).
How about ISPs actually implement ECN to deal with it? How about router manufacturers design for this (or we all switch to OpenWRT?) How about we techies develop tools to help consumers monitor line quality latency (ping times) over time? How about consumers actually learn to care about latency or we educate them? It's not "too complicated" for consumers to understand; consumers can differentiate between velocity ("what's your car's fastest speed?") and acceleration ("how quickly can it go from 0 to 60?") so I'm sure we could get them to understand bandwidth versus latency. It's just not well measured/monitored right now. (I think we need a better phrase/metric that captures the notion of latency like the "0 to 60" one for cars.)
If you want to help develop measures of latency, use Bismark (or vote for it in the FCC open apps competition) or come up with an open source ping-until-quit tool that logs timestamps for long time periods and displays the results graphically and/or competitively. Better yet, make a phone app that does this and hooks it to google/whoever's maps and shares the data so fellow consumers can see which areas of the phone company networks really suck. (I'm open to hearing about other tools. I used to use a freeware one but it went payware and the best tools I know of are DSLReports's SmokePing and their other tools.)
100x greater bandwidth may make recorded video faster, but it won't solve core problems with realtime (streaming or video conferencing) video faster, nor web conferencing, nor necessarily online gaming. I sure as hell don't want the internet's quality to become as lousy as cell phones and that's what'll happen over time if we don't keep ISPs we pay the big bucks to focused on fixing the problems.