As I've said, JYPE are aware how much they can cash in on a Taiwanese Tour so that's not what is preventing them.
How many Kpop Idols that performed in HK were linked to a Political Party with ANTI-One China Policies or were accused of having ANTI-One China beliefs that affected the banning from China Media and China Music Providers for all Artist under the same company?
It's understandable they they not perform in HK, which is under Chinese control, but considering the Taiwanese government themselves have an openly anti-One China policy at this point, there's no reason to continue avoiding Taiwan. JYPE is getting nothing out of China. They're just afraid of them for no good reason.