The typical person might be a family-oriented housewife with an interest in society people and trends. These groups of people are not necessarily mutually exclusive. However, there is not a lot of overlap among the groups either. This explains why Sunday newspapers weigh a couple of kilograms. Even though one may want to read only certain sections, they cannot be purchased la carte and one must bring the whole bundle home.
Some sections indeed go unread altogether, which is a complete waste.