I'd say the Chinese will be the biggest winners. Already Asia is the fastest growing travel market, and where the new wealth is, and China is hungry from phones to cars to planes to move from making other people designs to having the whole lot in house. Look at the Huawei P20 Pro vs Apple iphone.
So anything that knocks Boeing off it's perch is good for China. And these crashes could see Boeing exec's in jail, and heavy touch regulation from here-on out.
Simon