Same reason why there are so few mid-budget movies in Hollywood, and why medium size business either become giants or die. Cheap stuff is easy to churn out ->

Same reason why there are so few mid-budget movies in Hollywood, and why medium size business either become giants or die. Cheap stuff is easy to churn out -> low chance of success, x many shots Expensive stuff costs a lot to be the best, and gets big payoff. Middle-tier stuff costs too much for its benefits.