I agree with your overall point, but this is incorrect. I'm pretty sure there is already a law that says they cannot have fake food in commercials, at least for restaurants. There have been articles explaining how they take a "stock" hamburger (ok, they call it a "sandwich", technically) and dress it up for the commercial. But the interesting part is that the food photographers are constrained to using only ingredients from the store, they cannot use paint or plastic to represent the food. One of the little details I remember was they would use a brush to draw the ketchup to one side of the bun to make it look like it was liberally applied. It's quite interesting how they achieve the final goal - even though it looks NOTHING like the product that is delivered to the consumer.