I would not discount the Chinese (no pun intended). They are not fickle like their western counterparts,very patient and willing to take a very long term view on capturing the market. 3 years is but a blink to them ,and am sure their strategic planning spans decades.
For example, look at huawei and zte on the consumer market,they could have jumped in a long time ago, they have manufactured 3g modems and switching equipment for years already so much so that they supply cellphone providers the world over. Only in like recent years,they have started targeting consumers directly and are making fantastic inroads in that market too (watch this space).
Wechat is here to stay,and can only grow.