That new airplane company is spelled Comac.
I expect they will eventually take a large marketshare starting with China, rest of Asia, and Africa.
This will really hurt the economies of scale for both Boeing and Airbus.
They probably have a lot of smart engineers at Comac and very strong government backing. Within 10 years I expect them to produce planes that makes a lot of economical sense for operators and are really liked by passengers for comfort.
Maybe the FAA will find reasons to keep these planes from US skies, but Boeing will suffer as their market share declines.