"All that content" could well be deceiving. A great deal of that may have been the third act they scrapped.
Also, this movie is paying for a decade of sins this franchise has built up with audiences. They're going to lose a ton of money, but what hurts most is the brand is badly damaged. People, at one point, loved the X-men and turned out for it at theaters. Now? The movie going audience is "meh". That's the worst part. Like the movie if you want, but recognize the damage this studio is done.