If they kept their rates at a reasonable level, we would go there more often and stay longer. Thus, they'd be making more money if they'd stop raising their prices. If more people can afford to go, the more people will go. The more they will spend on food, souvenirs, etc. But having an Iger is expensive...
I tell non-Disney fans about the prices, and this has been for years, and their jaws drop. They say they'll never go there because they can't afford it. I know Disney wants to be ahead of Universal due to the perception of value but I think they are just getting to the point where they are scaring the average person away and frustrating their fans who are on a budget.