Existing technology makes this possible. It requires no major technology development or permission or major funding.

Here are a few reasons why it is possible right now:

1. Hosting costs are dropping to zero, especially thanks to the Internet Archive, who have agreed to provide unlimited free hosting.
2. Sharing culture is emerging, especially thanks to Creative Commons
3. The Internet is emerging as an open media architecture for publishing and audience building.
4. Link TV provides an instant conduit to 20M homes. Other outlets, like FreeSpeech TV, PBS, etc. are also possibilities
5. Mainstream distribution options are multiplying rapidly, especially with the advent of timeshifting and internet distribution

Long-term sustainability, even major success is very much within reach, primarily because this initiative makes it possible for two very valuable resources to reach critical mass: media by passionate creators, and audiences who care about it.