It's nothing to do with hating billionaires. Presumably they didn't realise how risky the whole thing was. I find it hard to believe that a father was going to

It's nothing to do with hating billionaires. Presumably they didn't realise how risky the whole thing was. I find it hard to believe that a father was going to put his son in so much danger, if he had realised. We are all working with the assumption that the crew believed that the trip was reasonably safe.