Also keep in mind that there is a big difference between a billion dollars in the hands of someone as capable as Elon Musk (who also happens to invest all of hi

Also keep in mind that there is a big difference between a billion dollars in the hands of someone as capable as Elon Musk (who also happens to invest all of his time and creativity), and a billion dollars in the hands of a random investor. The latter won't come close to the former in terms of returns.