It would have been worth saving had regulators not become apathetic eons ago, allowing mountains of RFI blasting devices to accumulate in the wild. Devices that radiated interference should have been vigorously dealt with from day one, as if they were unlicensed transmitters broadcasting jamming signals. Put it this way. A prank pirate transmitter appears on FM, broadcasting the droning sound of a hair dryer running 24/7, and the FCC shows up to fine the operator. But sell millions of people cheap hair dryers that make the AM band sound similarly bad directly, and the FCC doesn't show up to fine the manufacturer? This is silly.
The UK conjured up the evil television detector van. Why didn't we have good, RFI detection vans sweeping for faulty devices jamming any of the bands, mediumwave or otherwise? And no 4th amendment implications, either. They could've simply direction-found broadband RFI signatures and asked anyone in a building emitting one to turn everything off inside, followed by turning each device back on, one at a time, until the guy in the truck on the street saw it reappear on his scopes. No one ever comes into your home or business. No attempts to demodulate legitimate signals and spy on anything. Just plain-jane broadband RFI detection. The "RFI street sweeping crews" doing this could have issued certificates to each noisy device owner for covering all repair costs -- certificates local repair shops could have sent in confirming their successful repair. The techs would have simply completed them to indicate whether the government should reimburse them by billing the manufacturers (for design faults), or if (for post-manufacturing faults) their reimbursements should come from a general fund allocated for keeping the airwaves clean. (Yeah, I know, "socialism." But there are already funds for cleaning up trash dumping, and the airwaves are just another form of valuable public land, so...)
The end result of not having handled this phenomenon correctly from the get go is not just AM being hashy in many locations now, but the HF ham radio bands, the shortwave bands, and now even FM in certain intense digital environments. Every time I watch the ball drop on new year's eve, I think of the FCC.