Really, if you are isolating in your house, and loose power. What are you doing? A lot of people would need to go out and sit in the car with the AM radio to get any information.
I suppose to make it fair, every house should also be required to have an AM radio.
Maybe just to prevent digital lock in.
I'd hate to be in an Emergency, and suddenly I can't get any information because all I have are digital devices, An app on the phone, and the app was discontinued, or no longer supported.