If I recall: Steve Jobs rarely attended IR events, Jeff Bezos just sent a letter in advance (note: beautifully written), but barely made live comments. Future guidandes are often released as `something between +30% increase or -30% decrease`, meaning useless.
My impression is that nowadays most PRs and releases are already meticulously reviewed. Quite an interesting paradox: The more regulations, rules, controls and surveys are introduced less detailed and exciting releases and disclosures are..