Someone made a comment about scanner listeners being a tiny minority of the people who need information. That is probably true in cities. In rural areas there is a significant number of people with scanners. We don't have TV stations that report from the scenes of incidents. Our radio stations, if we have them, don't often do live reports of incidents. The newspapers, if we have any, might report on an incident or might not. If they do, it might be 2 weeks until we read about it. Papers are often weekly, not daily. Rural areas have wildland fires, snowstorms, floods and other types of incidents that affect us more than those in cities. For example, if we have a road washout there might be no detour and people get cut off from access to evacuation shelters and supplies. Wildland fires can approach very quickly and we need the scanner to figure out how to react. Listening to the county road department and the state DOT is essential to hear about road conditions. Law enforcement traffic is often where road, weather and fire information comes from. Rural areas tend to have far more power outages than cities and listening to public utilities is helpful. It is not uncommon to go into a business, like a hardware store, and hear a scanner behind the counter or in the office. The same goes for the NAPA store that are nearly perfunctory in small towns. Agencies need to monitor each other in rural areas. In California agencies with different radio bands sometimes overcome this by cross talking using a scanner on each side of the conversation. Scanners are usually going in law enforcement vehicles, fire vehicles and EMS rigs. When I worked in a small town hospital for nearly 40 years we had one going in the ER, nearly all the time. The information helped us keep prepared. At night we might not have a physician on duty, but on call. When nurses hear of a traffic accident with injuries, we would call that physician before the CHP or the county would call us. It mattered, because every minute counts for a lot of accidents and medical conditions.
In rural areas this is possible because there is far less radio traffic on frequencies than in urban areas. We tend to hear what matters more quickly and easier than in cities. Not only that, for the most part many rural areas already have interoperability because the primary band is VHF High. With these radios holding dozens to hundreds of channels it is easy to talk with most other agencies. I hate to see states build massive 700/800 meg trunked systems that need a kagillion repeaters and end the easy interoperability that was already in existence. I don't know what will happen if everyone starts encrypting things in rural areas.