It is a rare thing that KA lasted this long without more interference than is already happening from CX. An airline that has been bought out doesn't usually last this long... The Taiwan straights will eventually open up fully. When that happens CX looses it's bread and butter. The only way to recover that and to expand within China is dislodging the KA brand.
It will happen... It's already begun... KA now using CX screw control but a small example. The signs are there.