There are things that cannot be duplicated. Ingredients varies country to country. Taiwan pork taste different than US pork, flour maybe different, same type of spices but tastes different, even the water is different etc. Just my personal opinion.
Some Americans want to know what kind of this restaurant, they are very famous all over the world, hand made steam buns, dumples, & all kinds of other types of Taiwanese good eats. They already create 500 jobs to local.This Din Tai Fung--鼎泰丰 actually is locate in Taiwan, but in NY Manhattan, 5210 7th Ave, Brooklyn, NY, they just opened the new one on 7/2024.