Why is China's fairy tale literature underdeveloped?

Single Form Nowadays, people accept information in many ways, not only in words, but also in multimedia forms such as audio and video. However, few domestic children's literature works have been adapted. On the one hand, some written works are difficult to adapt; On the other hand, the foundation of domestic animation and musicals is very weak, and local films don't pay much attention to children. At present, the more famous Pleasant Goat and Big Big Wolf, the little magic fairy of Balala, etc., people who have seen it should also understand that the level is actually limited. On the other hand, there are too many things to see and play abroad, such as Disney, Miyazaki Hayao and Pixar, such as movies, animations, musicals, theme parks and peripheral products. ? There are Andersen in Denmark, Alice in Wonderland by Lewis, Harry Potter by JK Rowling, Pippi Longstocking by Lin Gelun in Sweden, Naoko in Japan ... China ... When it comes to this question, I almost cry. We also have many excellent authors/works of children's literature, but few of them have been translated abroad and gone out of China to the world.