South Korea achieved democracy when their GDP per capita was $4k. China's GDP per capita is approaching $9k. When will they be rich enough that they yearn for democracy?
I think collapse of the current government is more likely than a peaceful ROC-esque (Taiwan) transition from dictatorship to democracy.
[1] https://en.wikipedia.org/wiki/February_28_incident [2] https://en.wikipedia.org/wiki/White_Terror_(Taiwan)