It's a badly written article that ignores the changing way the public uses media. None of this would have happened had cell phones not been invented and people continued to buy transistor radios. The ONLY reason KGO is changing formats is hardly anybody listened. Should restaurants people don't go to be required to stay open? Say all you want about corporate radio, but they footed the bill for live & local talk on KGO for ten years. That's ten years of losing money. Shouldn't the listeners take just a little responsibility for that?
The people had already voted on this station and other radio stations in the AM band. The people deserted KGO ten years ago, and there's absolutely nothing any radio owner could do to bring them back. That's the reality that the complainers won't address. Radio may fail it's listeners after the listeners give up on radio. But it takes ten years for it to happen.
The bigger story that the article ignores is this same thing is happening to newspapers right now. Investment companies are buying up newspapers, firing the local staffs, and running centralized stories across the country. This isn't a radio problem. It's affecting newspapers, TV, restaurants, hardware stores, and everything else in this country.