3G Networks: Where's the bottleneck?

I read this blog by Om Malik (of gigaom.com fame) claiming that the biggest bottleneck for 3G networks in the backhaul network of T1 lines that connect the base stations and the rest of the Internet. Can that be true? Does he really think that while all the desktops and laptops around the world that are watching live streaming videos on the Internet with T1 lines are perfectly fine, the specific T1 lines that support a 3G network is screwed up? Ha .. can't believe he made such a comment..

But anyhoo .. a recent startup Ustream claims to have built an application that will allow live streaming on video to a large number of 3G phone simultaneously. I bet they haven't utilized multicast protocols in any way, but if they do succeed in streaming Obama's inauguration coming up in a few days, I will be mighty impressed at what they've accomplished!