MS, Android, etc. those are outliers and every story has one. The reality is, the vast majority of foreign companies looking to dominate Chinese market share have met their demise.
I would say _especially_ so for companies that are displacing local operators.
Just think how mad the US taxi industry is about Uber. Now imagine if Uber is owned/operated by Jose in Mexico City. You think our politicians wouldn't regulate the hell out of it? You expect less from the Chinese?
In regards to Didi Kuaidi. Sure they'll be regulated too, but when it comes down to the wire who do you think the government will side with?