At the risk of destroying my efforts at being reasonable, suppose it's an "if you eat the whole thing, it's free" situation, except there is no "$19.99 if you can't finish" else clause. You know that they didn't offer an else, yet you eat anyway, and you slip your onions into the plant in the corner.
Then they can make other ridiculous rules too, for example "you should pay 100x the price in menu unless you can stand on your head for an hour". That would probably increase the income dramatically.
But, you choose not to eat the raw onions they've served with the meal.
This would be the analogy of choosing not to render html/javascript content.