There are debates about a coming global bandwidth shortage.
Will broadband internet connection become a scarce resource? Very unlikely.
Youtube, Joost and sharing content on P2P surely creates demand for bandwidth. Supply will follow.
What will be the bottleneck of the Net economy if not bandwidth? Is is us, People. Again.
(Did you know that the bandwidth of the human eye is around the speed of an Ethernet connection?)
How many conversations can you have in a day? How many videos or movies can you watch on the net? How much Attention can you pay to your interests?
I recommend you to read this blog entry on Attention Economy - if you have the time.