Universal Studios Japan would be a great example then as it's Uni's most popular park and is inching closer and closer to the Tokyo Disney parks in attendance every year.
OK, I give. It seems 'studios' has been expanded to mean theming as if there was an active studio production to tour even if there wasn't. And maybe taking on the other meaning of the products of a certain studio or group of studios, as in, "come and see attractions based on the movies our studios have made!"
So, maybe it'll be renamed "Disney, Pixar, LucasFilm, and the Superhero One... Studios Theme Park"! The ellipses are for further acquisitions.