Is your complaint really that more people are being exposed to Conservative principles through a movie based on a comic book.
How many people will see Iron Man 2? How many people would see a movie based on a dry discourse of conservative principles?
Culture is shaped in many ways by mass entertainment.
Perhaps when "Atlas Shrugged" makes it to the big screen without being butchered, I will be more hopeful. Then again, some of Rand's tech is comic-book as well...