That's true, though I do think it's less likely to happen with "new money" as opposed to "old money". The ones in this story are "old money".
9/11 may change things, but there's no way to know for sure. From the way things are looking, Robbie might not even have as much to do with them at that point. Brad seems to be pulling away from him completely. In a way, I'm kind of hoping he finds someone new. To me, their relationship has jumped the shark. There's no spark at all. They just f**k.