but, with wireless cards, most people can access another person's access point. (I don't currently use wireless, but do have a PCMCIA wireless card sitting on a shelf for when it might be needed). Usually, these connections are encrypted so that only the computers authorized to the local network can access it, but not always. Most wireless cards such as that have a limited range, like 100 ft or thereabouts.
Anyway, if people's computers with ISP access, such as DSL, satellite, even dialup, also had wireless and were willing to share their connection and at least one computer, small local neighborhoods could have local computer-to-computer or "chained" networks that exist outside of Big Brother telecoms, and with the right software (I don't know if it currently exists, probably does in some form), open-source, all the computers that do have Internet access could be shared with those that don't.
Originally, that's how I understand Darpa net was conceived, as a locally distributed system that could rewire itself as needed when portions of the network went down. Now, the "Internet system" seems designed to use centralized backbones, that when one goes down, everybody's who's downstream is out of luck until it's repaired. While it's just a guess, this was likely to allow the telecoms to snoop for the government through control of the Internet access point and centralized architecture.
For an example of the hardware that can extend local wireless networks from neighborhood-to-neighborhood (greater than 100 ft (or a typical wireless card)), here's but one webpage that should stimulate the brain cells:
http://www.radiolabs.com/products/wireless/point-to-point-bridge.phpAs to the legality of any of this, or your question regarding the telecom laws, I'd have to defer to others. I do seem to recall reading something about that, but it wasn't the law itself that I read, likely it was a news report, but I don't specifically remember.