> Most of the world has solved the worst of the problem by simply not allowing caller-ID spoofing and by blocking bad actors

I live in the Netherlands, and I get several spoofed crypto-scam calls every day. I have also stopped picking up the phone for numbers I don't recognize. My own telephone number has been used to call others for a while, so I would get tons of "sorry I was busy, what did you call about?" return calls from random people when clearly I had not called them at all.

As far as I know, the only reason spoofing is even possible, is so that call centers in other countries can pretend to be calling from a local number, which.. why is that even a feature?

This feels very much like an example of "this should be run by the government" rather than letting this be run by companies.