5 rich people sign a paper saying it’s cool if they die in a shitty submarine, they do, and we spent millions trying to find them.
Not that I don't agree with the sentiment, but this isn't exclusive to the rich. There have been numerous cave diving incidents where people intentionally do stupid things like ignoring warning signs or breaking past locked gates only to end up in trouble and require a huge rescue operation to get them out and/or recover their bodies.