I can tell people how to avoid sending mail, but the post still has to ship my letters. At some point some infrastructure becomes a utility and has to be treate

I can tell people how to avoid sending mail, but the post still has to ship my letters. At some point some infrastructure becomes a utility and has to be treated as such. A universal login for other services and messaging at some point of concentration reaches that point. But it is a tough field to regulate, as we most likely haven't reached a peak of technological development in that space and regulation in developing fields is hard.