I know the word "privilege" is anathema here, but it applies, even if neither his biological nor adoptive parents were necessarily rolling in dough.
He had a wonder years middle class life.
>He had a wonder years middle class life.
In the middle of the tech revolution's ground zero. In fact, being on a lower rung of the upper-middle class ladder might have been protective, in that he had access, but not too much access. In other words, enough resources (that most Americans of the time did not have) to get off the ground, without being tracked into less risky, more conventional, still lucrative work.
In America, there's the whole mythos of the rags-to-riches American dream. Some people whose story is really riches-to-more-riches present their success as the former.
[1] https://www.businessinsider.com/elon-musks-dad-tells-bi-abou...
Doesn't that mean you should be the one checking?