What about Satoshi? And funnily enough it was exactly Musk status circa 2017. A billionaire known only by people following the stock market and tech/auto sector specifically.
He made his own bed ever since the accusation of pedophilia against Vernon Unsworth who was participating in the Thai cave rescue.
The combined wealth of Brin and Page also would land them at #1 in the Forbes list but nobody knows them. So it's possible to a degree, it was never possible for Musk however because he has a deep need to be a primadonna