But to address your first point, what you are basically saying is that when a person walks into a restaurant they are ready to buy - its just a matter of what to buy. That may be true for some (or most) cases. But suppose someone walks into a restaurant on a busy strip for the first time, looks at the menu, reads only descriptions (because that is the only information available) and they do not like what they see so they move on. Who has not had that experience at least once? Or what if the dish they ordered looked worse than what they had in mind and made them regret their order and that bad experience causes them never to return to that restaurant?
I guess the value proposition I am making is that with more information, consumers are able to make better informed decisions and that results in lower uncertainty and remorse of the decision. How that affects the restaurants bottom line would be very difficult to measure. But if any business thinks that depriving their customers of information is more beneficial then there is a fundamental problem. I hope that is not the case.