more doc on the future of radio

here:

...At some point we need to face the facts. AM and FM broadcasting suck down huge amounts of electricity. Their towers bristle from swamps and mountaintops. And their technologies were developed before the middle of the last century. They use old brute-force technology to deliver what can be done far more efficiently by more "cellular" means. The low number of channels, and high costs of occupying them, makes the industry available to a few grandfathered incumbents. Why shouldn't there be an unlimited number of stations, just like there are an unlimited number of Web sites, of blogs, or or any breed of source on the Net? No reason at all. Unlimited opportunity will truly let the market decide what it can support.