While it's definitely going to skew the odds, and by a lot, the sparsity of similar successful startups in those areas before him suggests that neither SpaceX nor Telsa were the kind of things that you can build with what he had from combined inheritance and PayPal cash-out.

That said, I don't think there was much from those mines: https://www.snopes.com/news/2022/11/17/elon-musk-emerald-min...