I guess by "greedy" you mean that they want to price their product as high as possible, while still maintaining a good rate of sell-through. Going by that theory, which corporations would you say isn't "greedy". Do you really believe that AMD wouldn't sell their cpu's at higher prices, if they were sure that they would sell just as many?
The real reason is basic economics, I would imagine. Intel probably believes that this is the proper price point for them to benefit the most. No different than any other corporation.