Sarnoff was not alone. And their attempt to kill FM started in the late 30s. They even pressured the FCC to change the frequencies of the FM to render existing FM receivers obsolete.
The band change was pushed by Sarnoff, but in the end actually favored by FM stations themselves as the lower band had severe interference from literally being "high end of the short wave band".
Sarnoff and his lawyers eventually drove FM's inventor to suicide.
We know that story; it was due to all the efforts to block Sarnoff's patents from becoming the standard.
And this whole thread shows that too many people don't distinguish between broadcast radio (a means of distribution) and audio content (the product). The point is if radio stations go out of business and towers turn to rust (or are appropriated by cell phone carriers) the demand for audio will continue.
Two different subjects. Radio is the most robust in the case of emergencies because it is simple and basic.
The only case to be made for the most robust system happens to be Elon Musk's satellite based phone and data system. But it is expensive, and radio is free.
I don't see any newspaper people publishing calendars with pictures of presses.
And I don't see any radio stations with calendars with pictures of towers or websites with calendars with pictures of servers. What is your point? Or are you just generating ground clutter?
Terrestrial audio broadcasting will not survive as something to use in an emergency. Besides, if radio towers can survive the emergency, so can cell phone towers.
Most cellphone towers are provisioned with just temporary backup battery power, if even that. Very few are in locations that allows them to have actual generators with fuel tanks. Most radio stations of any significance have a generator at their transmitter site and many have such facilities at the studio location; those that don't have backup in their studios (center city high-rise office towers, for example) are able to originate from the transmitter.
One of the reasons why KTNQ/KLVE/KSKQ/KRCD in LA moved to Glendale in 2001 was the ability to have our own generator at the studio office building.
The first things to go in a disaster is cellular service, cable TV and landlines. The last thing standing is OTA radio.
Besides what does terrestrial radio tell anyone in an emergency that anyone with half a brain can't see for themselves: There's a storm (look out the window). The lights are out (sitting in the dark should be a clue). But newsies get off on that and they can feel that for once everybody doesn't hate them.
Terrestrial radio is the base for the national emergency alert system which also has state and local applications. Through it, emergency notifications and important information can be transmitted to people with battery operated radios even in the worst of situations.
I think you are just being a technical nihilist!