User blog comment:Mr. Xemnas/Fin Fang Foom for Iron man 4 WHO'S WITH ME!!/@comment-5364175-20130224165334/@comment-4651179-20130224165740

The problem is that Marvel Studios doesn't want to make a story with end. They're building a cinematic universe, more or like what they do in comics, but in the big screen.

But also, Harry Potter is different because it's an adaptation (as the MCU), and they're not the same, in the 8 movies we see a lot of character development, defining moments, and a good storyline progressing, and also it starts with the innocence of three young children who in the process of the story see what are the real challenges of the world.