Either way, it's China's incompetence and reckless endangerment of the rest of the world that has caused this. So the more important question is what we will do about it?
So far the answer seems to be "nothing because the price of cheap plastic shit might go up 2p a tonne and that's more concerning than a global pandemic".
After seeing the response from Western countries, (delays, denialism, half measures, etc.) I really doubt we would have done any better. Probably worse.