I will bet that in 5-10 years, China will start manufacturing its own airplanes.
China has been manufacturing aircraft since the 1930s, and its own designs since the 1950s.
Many of its aircraft of the 20th Century were reverse-engineered derivatives of Soviet types, but there were also indigenous designs which sold fairly well globally such as the Harbin Y-12 light turbrprop.
Their indigenous first jet-powered airliner, the Shaanxi Y-10, flew in 1980.
The current C919 airliner project uses the same LEAP engines as the A230Neo and 737Max:
http://english.comac.cc/Galleries/Photo/201512/25/W020151225...
It is very difficult to build avionics and jet engines that work, which are just shipped whole sale in final assembly. It will take China much much much longer to replicate that technology, and final assembly rights aren't going to help much at all.