This doesn’t seem right to me. There was a relatively short period of time when phone conversations were ubiquitous, cheap and fleeting, but for the the majorit

This doesn’t seem right to me. There was a relatively short period of time when phone conversations were ubiquitous, cheap and fleeting, but for the the majority of history, business communication was performed in writing, and we’ve basically gone back to that with the advent of ubiquitous email and messaging.