The average person definitely doesn't know. I've met wealthy people in their 20s in LA who don't know who Elon Musk is. Attention is hyper fractionalized.
People know who Jeff Bezos is, people don't know Tim Cook.
No one around me knows who Bezos is, but everyone knows Musk - the guy with the Teslas and rockets is kinda hard to forget, but Amazon doesn't even have a localized website here...