Mostly because of two reasons: 1. China has the largest and most complete industry systems in the world. If you know what ever you need, most likely you can get

Mostly because of two reasons: 1. China has the largest and most complete industry systems in the world. If you know what ever you need, most likely you can get it in hours if not minutes in some industry hubs, even in rural areas, you can still get it in days. I would say for most of us, such thing is hard to imagine. 2. China has a centralized and powerful government in the mainland managed by a single party, when the supreme leader says "I want something", deem it as done. It cannot be worse when going in the wrong directly but vice versa, nothing can beat it when in right direction. Renewable energy is one example. Other examples such as high speed rail systems and fiber network rollout were almost exactly the same story. China's first generation CHR was not that good at all but after decades of massive deployment, I really cannot see any high speed rails system better than China's. China's national fiber rollout started around 2009 which was after Australia's NBN plan, when most of China's telecom infrastructures were actually copper. Now China's fiber networks has covered around 95% of the population but much of the NBN is still on HFC or VDSL. For reason #1, no country can compete in short term. For reason #2, hard to say good or bad now. I used to hold a negative view on that. But recent COVID responses around the world just showed me a different perspective.