There is no good source for how much money Elon got from his family, but it's fair to assume it was probably 7 digits. Turning a few million dollars into being the most wealthy man on the planet is riding his family's coattails? He founded Zip2 in 1995 with $200k in funding and sold it for $300 million in 1999. Even if he had millions of dollars to start with, he made more for himself than his family ever did by the age of 28.