There is no doubt Internet will become the next generation video delivery. Like the articles said, there is a number of challenges. Technically, if the current Internet is used, the more contents; the slow the network. Content aware Peer-to-Peer technology might be the solution. Multicast is definitely a great help. Comparatively, business has a lot more challenges.
1) How does the content providers compensate for the investment of the content?
2) What is the best way to do advertisement? I found youtube's way a little bit annoying. However, compared to the traditional way - 5 mins ads out of 10-15 minutes content delivery, youtube's way is still better.
3) How are the viewers charged if content provider is sitting across the world?
4) How does content provider earn visibility?
There are so many questions. I would love to learn the current business model of Internet radio. Maybe, marketing folks who are working for iPhone apps company will have some insightful idea how to earn visibility from the overwhelming large number of iPhone apps companies.
Its a very good article about P2P video. I haven't thought about it before. Specially the numbers that the author presents. Though the trend seems to be that the internet isn't prepared for P2P streaming yet. The fact that most of the content providers that move from P2P to direct broadcast state that the P2P disadvantages are stronger that it's benefits.
Thus, perhaps this is the area for good R&D to be worked on. The idea seems logical. Being able to go into a buffet bar of video and pick a little from many ports instead of a single provider in theory allows for a safer use of bandwidth, but availability becomes a factor and also... Internet latency is important to account... let's wait to see what the future holds for us.