I'm not disputing that, but in the case of Pandora, the deed is done. There's nothing we can do about it. The thing is built, it's happening. We can second guess the initial decision all day long, but that has no bearing on the land being any good. If it's good, I'm going to enjoy it, and my enjoyment will not be tempered by whether or not I think Disney should have built it at the price they did.
ETA: Just for the sake of full disclosure, I think Disney overspends on all their theme park projects, and they need to get that under control.