I absolutely believe games are one of the worst mediums for telling a story based on what already exists. That isn't to say they can't have great storytelling or that storytelling can't be done in new and exciting ways using video games, because I have experienced both. But as a medium I honestly believe it will always be a very challenging decision if a creator's primary concern is to tell a story. The best game stories that stand the test of time will always be complimented by and supportive to the gameplay itself.
Well said.