Who I have the same questioned this topic

I get dozens of spoofed phone calls a day.

I have to answer them because I get some legitimate calls from unknown numbers.

The do-not-call list is a comical joke.  The FCC is useless.

I don't see anything that gives me any confidence that anybody takes this seriously, other than the recipients of the calls.

I do not believe that this is an insoluble problem, but it will probably be expensive.  Impossible and expensive are two different things.

I think Verizon (and the rest of the providers) should be more proactive in solving this.