Aristotle already had a dramatic structure in his stories. Ever since, a good writer created a story arc where a play, movie or book had a start - a character build up; an introduction or the setting. Then the reader would get familiar and build a bond with the protagonist, the reader had to become emotionally attached to the character so the reader would want him to win or to overcome his problem.
When the problem is set and the character introduced, the protagonist would face his struggle or enemy, resulting in a climax where often the good guy would overcome his problem and come out stronger in the end.
Later the stories would go longer where the climax was suspended or twists were added or new challenges were added, so the public would feel like being on a roller coaster.
Emotional attachment and a high risk/reward factor (will he die if he jumps from this cliff, or will he save the day?) are keys to a good story.
Sounds familiar?