Your comment seemed to be claiming that, at least in the example of email spam, only technology (filtering) addresses it, that there is no role for regulation.

Your comment seemed to be claiming that, at least in the example of email spam, only technology (filtering) addresses it, that there is no role for regulation. I was disagreeing with that. My understanding of phone spam regulation is there is some that legislates technology, namely forbidding completion of connections of spoofed phone numbers.