Supermarkets urge against panic buying as Government launches 'preppers' website - warning families to start a national crisis 'emergency kit' of tinned food, batteries and bottled water

Most people don't.

Most people don't even have spare clothes or water and food in their car, which they're far more likely to need than a battery bank and camping stove.

They also don't keep backups of important documents on an encrypted thumb drive in their go bag, or a spare bag of dog food in the pantry. They don't have a radio, or any kind of communication outside their phone/laptop. They have nothing packed in case of an emergency evacuation like a fire, they don't have any predetermined meeting points for their family, and they don't know basic first aid.

Virtually everyone in the developed world is woefully unprepared for a simple power outage, never mind an actual disaster.

Its trivially easy and not particularly expensive to be prepared, but virtually nobody is because they never think ahead.