The United States limits animation primarily due to cultural and regulatory factors. These restrictions stem from a combination of industry practices, government policies, and societal norms.

In the United States, animation is often regulated by the Federal Communications Commission (FCC) and the Motion Picture Association of America (MPAA). These organizations enforce content guidelines to ensure that animated content is appropriate for different age groups. For instance, the MPAA's rating system categorizes films into G, PG, PG-13, R, and NC-17, with each category having specific content restrictions. This system helps to control the exposure of children to potentially inappropriate material.

Cultural factors also play a significant role. American animation has historically been dominated by a few major studios, such as Disney, Pixar, and DreamWorks. These studios have established certain standards and tropes that have become synonymous with American animation. As a result, independent animators and studios may find it challenging to gain traction in the market due to these established norms.

Data from the Motion Picture Association of America (MPAA) reveals that in 2020, the majority of animated films released in the United States were produced by major studios. For example, Disney and Pixar accounted for 35% of all animated films released, while DreamWorks contributed another 10%. This concentration of power in the hands of a few studios can limit the diversity of animated content available to the public.

Furthermore, the American animation industry has been influenced by the country's cultural values, which often prioritize realism and escapism. This preference for realistic animation styles can discourage the development of more experimental or abstract forms of animation, which are more common in other countries.

In conclusion, the United States limits animation through a combination of regulatory frameworks, industry practices, and cultural preferences. These factors work together to shape the landscape of American animation, often favoring established studios and certain styles over more diverse and experimental approaches.