I don't know from experience, but I'd argue the entire point of private jets is to not have to share anything with anyone. These are a different class of people; they don't think like you or I do.
They think the same way we do. We play the game at the level we can afford. Their game is higher level, but it is played the same.
Pulling my plane out of the hangar is no different than pulling the Subaru out of the garage. Thinking about sharing the ride never enters into it. I don't need to trade reduced cost for increased efficiency and reduced convenience. Neither do these 525 jet owners or charter clients.