New evidence strongly suggests that OceanGate's submersible, which imploded and killed all passengers on its way to the Titanic wreck, was unfit for the journey. The CEO, Stockton Rush, bought discounted carbon fiber past its shelf life from Boeing, which experts say is a terrible choice for a deep-sea vessel. This likely played a role in the submersible's tragic demise.
You do not need to be smart to acquire wealth.
Of the people in the sub, I am confident that 4/5 of them were born into wealth, and I can't really find any information on the other one.
The Dawoods (father and son) were only wealthy because their father/grandfather was wealthy.
Stockton Rush was also born into wealth, his family made their money from oil and shipping.
Can't find a lot of information about Hamish Harding, but he was flying aeroplanes at 13 and went to a prestigious private school called The King's School, so it's safe to say he was also born into considerable wealth.