A while ago, the Chinese government announced that they wanted even more control over computer games sold in the country, including specialists to oversee content (which I assume would be a Chinese government spy on every game development team) and forcing developers to "enhance socialist values" in their games. So what would happen if the entire games industry said "why bother" and pulled out of China? My first guess is that the second-hand games and black market would pick up the slack, forcing the government to spend a whole lot more money, time and effort trying to police the situation. I think the best attack against a communist government that wants to police and control everything is to push it further in that direction and let it collapse under the weight of its own bureaucracy.
Mokalus of Borg
PS - I wonder if that will ever happen, and what the results would be.
PPS - There are always unintended side-effects to any change.