http://harvardbusinessonline.hbsp.harvard.edu/hbsp/hbr/articles/article.jsp?ml_action=get-article&articleID=R0807H&ml_issueid=BR0807&ml_subscriber=true&pageNumber=1&_requestid=142277

It was a compelling idea: In the digitized world, there’s more money to be made in niche offerings than in blockbusters. The data tell a different story.