The document discusses several reasons why Hollywood studios choose to remake films. Key reasons include having access to better technology and equipment than when the original was made, appealing to new generations of audiences who may be unfamiliar with the original, capitalizing on the popularity of certain actors or genres, and using new marketing and distribution methods like social media to promote the film. Several case studies of remade films are examined, like Robocop, Batman, and War of the Worlds, looking at their original budgets, box office performances, and notable differences between the original and remake.