Essential services (banks, infrastructure, transportation, security) must not collapse due to a communications collapse!
In an emergency (war, earthquake, huge fires, national infrastructure failure), essential services become even more critical. If they collapse, due to the expected result of the lack of communication, a chain reaction may be created that leads to chaos. In order to ensure the resilience and survival of essential services for the economy and the public, an alternative to regular communication is an existential necessity.