Not really personally. The telcos have an interest in making this not a thing, and I have strong hopes that any solution based on this concept would be put out

Not really personally. The telcos have an interest in making this not a thing, and I have strong hopes that any solution based on this concept would be put out of business by fixing it at that level. There are laws in the US about this too, with some pretty heavy penalties that are possible to collect in Civil court. The problem is finding the perpetrator, as the phone system makes it difficult to get accurate info on who actually called. I suppose someone could start a class action against the telcos, or an aggressive AG could start a RICO case. BTW, AT&T, if you don't fix this soon I'm moving to T-Mobile.