As long as they are making a profit then they don't care. What need to be done is everyone come together and boycott them for a day at least, hurt their pockets.
Some of them read them and will respond and some of them just don't respond.
They probably doesn't care or too busy to respond to reviews.
Because each McDonald's is independently owned and operated by an individual or an Limited Liability Corporation is my best guess not by McDonald's Corporate Office.
Thanks! Your answer is awaiting moderation.