First of all, no one was trying to treat his obvious depression that was quite possibly clinical. Where was the doctor during all of this? Playing golf? It's clear he's having problems adjusting, but no one's thought of keeping an eye on him to make sure he'll be okay? That seems dubious.
Sam Wildman showed up in time to stop him for killing himself. She didn't act terribly surprised to catch him doing it and she talked him down off that ledge.
Are you sure nobody was watching him making sure he's ok?