"By their very nature, dark comedies are not inherently made to be crowd pleasers, and are generally built on a darker and more pervasive sense of humor. They can be challenging and subversive, and as they appeal to a more narrow audience, many times they lack mainstream appeal. You don't see a lot of dark comedies that get heavy marketing campaigns, and they are rarely massive box office successes.
Just because a film has a more twisted or satirical sense of humor in of itself doesn't make it good, but a lot of great dark comedies have succeeded in pushing the boundaries of their genre and finding creative ways to tell their stories. Many of these films are massively underrated, and hopefully more audiences will discover them."