If I were so obscenely rich I could drop half a million to take a family member on some risky trip to, say, the bottom of the ocean, I'd probably consider dropping a few thousand extra to hire someone to research whether the guy running the trip was a total clown who ignored blatant engineering and safety issues https://newrepublic.com/post/173802/missing-titanic-sub-faced-lawsuit-depths-safely-travel-oceangate

I'm not trying to be a ghoul or anything here but I'll bet $20 they did more due diligence on their limo driver than the guy taking them to the bottom of the ocean in a sub that looks like it was ordered from wish.com