I think Blockbuster films are both money making machines and legitimate entertainment that show of the full technical capabilities of movies by intertwining story and special effects into true spectacles. All movies that come out in theaters are made to make money that is the whole point of movie making, it's entertainment and people buy things for their entertainment, movies, popcorn, Edward Cullen posters, anything. Sure some movies are worse than others, for example the Transformers movies have toys, poster's etc out and everyone knows you can't go anywhere without seeing some type of Cars merchandise but also it's the story line behind these movies that will make us buy the products. I will admit I have bought some hit Blockbuster stuff and don't mind hanging the poster of Mater I have (from Cars) on my wall but a lot of it is because I love the story lines and the special effects within these movies. Cars the story of true friendship and don't judge a book by it's cover and Twilight a story of true love and overcoming obstacles may not appeal to everyone but I for one love these movies based on the story lines. Movies like Harry Potter and Twilight open up a world of possibility and wonder the story lines of these movies are amazing, and all the promoting and merchandise from movies like these only get people excited and allow us to get lost into a world of fantasy, whats wrong with that? Special effects now a days are amazing and big Blockbuster hits like Transformers and Spider-man I believe are not only for money making purposes but for showing the world what directors, actors etc are made of and how much the movie making industry has evolved.
It is hard to argue if Blockbuster hits are mainly just made to bring in money or whether they are legitimate entertainment, it all depends on the person. some may just buy stuff because they think it's cool, I am the type of person that focuses mainly on the story line and or graphics of the movie.