I've been thinking the same thing of late. I think this is the best chance China is going to have for the remainder of President Xi's life (call it ~20 years or so?) to take Taiwan. 1) The failure of one country two systems in HK has made that model super unattractive to the Taiwanese people and their attitudes have hardened towards the mainland, so a political solution to Xi's Taiwan problem is very unlikely in the next 20 years. 2) The US is in lockdown and Trump's already strong isolationist tendencies are heightened by the crisis, and frankly he already appears to be panicky. I think he would find it near impossible to commit US troops to defend Taiwan at a time like this. Furthermore, China is unlikely to achieve clear military superiority over the US in Xi's lifetime. No one else is in a material position to intervene. 3) If Taiwan knows the US will not come to their aid, they're unlikely to even put up much of a fight if given a "choice" of one country two systems vs full scale invasion.