A child asked me why there are so few soybean products and soy sauce factories in the United States and Canada. How should I answer?

Because most people in the United States and Canada do not eat soy products or soy sauce. Only the Chinese, Japanese and Koreans in the United States and Canada eat soy products and soy sauce, but those in these countries Immigrants make up a small percentage of the native-born population of the United States. Therefore, there are very few soy product factories and soy sauce factories in the United States and Canada, and the consumer market is also very small.