Look at the plot later, and find that there are hints in Miyazaki Hayao's cartoons. He is implying that the people who live at the top of society now are actually those giant babies. Now, once they enter the society, they will lose themselves. Many times, they forget their names and lose their original heart. Like Chihiro's parents, they have become the most common and stupid creatures in the world.
Only by keeping your original heart and not being tempted can you truly achieve happiness and success. The little white dragon is like a lost person. He forgot his name and always wanted to learn higher technology, but in the end he was made by others.