If I ate unlimited rice, I would eat thousands of calories per day in rice alone, and this diet wouldn't work.
One of my favorite foods -- which also happens to be one of my worst enemies when the question is one of weight loss -- is plain white Japanese rice. That stuff has 1.5 calories per gram of cooked rice, and I can easily put away a kilo of cooked rice (= 1500 calories) before the satiation instinct even thinks about kicking in.