I think the recent China thing shows why a "global economy" isn't viable, because something happened in china it has fucked everywhere else, depending upon foreign trader or tourism is just not a good model for the government to follow.
Gee it's almost like going all-in on a communist totalitarian country just above 3rd world level in some places wasn't the best idea... But OC that can't be right because the 'market' said it was a good idea.
This is more than that. Apple had already given a broader than normal range and cited the uncertainty around the Coronavirus. Now they are saying that they will not hit the lower end of that broad range. So this comes as an update that the market is translating to "things are worse than we thought".