as Encyclopedia.com explains. It worked. It still works. Peering was never demanded in the wireless space. Instead, the government sold exclusive use of frequency bands to the carriers. The result has been the creation of multiple incompatible networks, which is how the biggest carriers -- AT&T ( T) and Verizon ( VZ) -- like it. Even the development of a single global standard for mobile broadband, LTE Advanced, hasn't pushed the big guys toward interoperability. It's not in AT&T's interests to be anything but a monopoly, or a shared monopoly with Verizon, as CNET notes. When the rest of the industry, organized as the Competitive Carriers Association, which now includes Sprint ( S), tried to push AT&T toward interoperability, the bigger carrier simply refused, saying the group had other options, as Fierce Broadband Wireless reported. Thus the wired Internet is, from the user's point of view, one network, while the wireless Internet is multiple networks. This means duplicated services in high-traffic areas, and no service at all in low-traffic areas. For you to get a 10 MHz slice of spectrum for watching the football game, as seen on carrier commercials, there really needs to be 40 MHz available -- one 10 MHz slice for each carrier you may choose. And if a rural carrier is thinking of adding a cell tower in a remote location, it has to consider that only its customers will be able to use it, making the expense harder to justify.