I mean...I know of people who literally don't even answer their own phone. I mean..yes...they do; but the phone they answer is number that's known to only one other person...and no one gets to *that* person without getting through an answering service.
Outside of conference calls...I don't many rich and powerful people who actually call. It's always the assistant or someone else. They don't really care about the assistants outside of difficulty in keeping them over call screening....despite the fact their businesses were largely built on giving us reasons for call screenings.
I have no sympathy for them.