Forbes has a pretty interesting article on the success of Harry Potter franchise and here is an excerpt.
When the final Harry Potter movie hits theaters next month, it will mark the end of the highest-grossing franchise in the history of movies (on an unadjusted basis). So far the movies have earned $6.3 billion at the global box office. If the next film performs as well as last year’s Harry Potter and the Deathly Hallows Part 1, the franchise total will approach $7.3 billion. Considering the final Potter film will have the advantage of ticket price hiking 3-D, it could earn even more.
So Harry Potter has been a boon for the overall box office and anything that makes the box office numbers look better is good for Hollywood. No studio executives want to see stories about shrinking audiences and sinking revenue. That just helps to turn people off to the already high-priced experience of going to the movies.
But Harry Potter has also helped the struggling DVD market. According to IHS Screen Digest, U.S. spending on DVDs (including Blu-ray) grew 1.6% over April and the first two weeks of May thanks to the DVD release of Harry Potter and the Deathly Hallows Part 1. Of course the video market is still down 15% year-over-year but the decline improved by 6% over the first quarter dip.
While its not Robotech related the article is a fascinating look at how a major studio makes money off a property and how that property can benefit other films as well. Its worth the read.