Bill Gate’s family clearly contributed to his and Microsoft’s success. His mother in particular had direct contact with the chairman of IBM which lead to a scrappy software company landing a life changing contract.
I’m not saying that to discount the rest of his achievements or effort either. The greatest among us not only have the drive, the intuition, and put in the work, but they also seize upon opportunities when they come knocking.
If it were not his mother and instead a friend’s mother or father that had similar contacts, I have no doubt that Bill Gates would have been just as successful. He would have found that nut and cracked it one way or another.