The thing is, animated movies make a ton of money. Because, until recently, there has been a dearth of them. You had Disney, Pixar, (1 a year of each) and then DWA (1-2 each). That's 4 movies. Now, we throw Illumination into the mix. They've had one a year. But, Disney + Pixar have been alternating lately and DWA has scaled down from their 3 a year strategy. So, the amount of animated movies per year has still been constant. Fox + WB + Laika + Sony + etc maybe have 1-2 on top of that.
But now, all of these studios are getting much more consistent. WB will be 1 a year. Sony is looking to be 1 a year. Disney and Pixar don't seem to be alternating. Illumination is ramping up. I mean, there's only so many weekends in a year. A blockbuster needs a weekend to itself. I think there's going to be an overall scaling back in the number of big movies soon, and animation is just adding to the issue.