The difficult problems are the entire ecosystems, supply chains, and tight integration that are just on very different levels between Germany and China. Every part of the supply chain has to be optimized or else it eats into the margins. China is a beast at "extreme supply chain micro-optimization". It would take decades to build equivalent ecosystems elsewhere, and in the meantime implement artificial barriers to keep China less competitive on Western markets.
This is true for all of Europe and the Western world at least.
This video [1] highlights just how big a gap there is between China and everyone else.