This is probably the first real bad goof-up by Pixar, and I even liked Ratatouille. Disney fell prey to the lure of more toy sales, than considering if a sequel to Cars was a good idea.
Toy Story sequels worked, but really all of the other Pixar movies, really don’t lend themselves to sequels. As great as “The Incredibles” was, a sequel would not work.
I agree, though I wasn’t much taken with Ratatouille (don’t like the dish much either.)