I agree on most things you said. Something made me think about propaganda, you do think the tools a government has nowadays will make it possible to anticipate and crush any attempt of revolt ? I mean, companies and states have developed massive ways of gather and analyze information from all kinds of sources (at a scale never seen before), but at the same time information goes fast and always finds a way to be transmitted around censorship measures. I'm quite puzzled, I am tempted to think that the end result will always be the same, but the big advances in technology makes me skeptical about it.
In a democratic state where individuals liberties aren't easily subject to state control there is a constant battle of control on different levels. There is the battle between People and the Government. In a country like India or USA, an individual can go and file a petition against a government move in the highest courts of the land. There is a free media which has camps owing loyalty to different set of demographics. In two party systems like USA and UK, this can lead to severe divisions yet, the balance of power has the potential to be shifted. This keeps the politicians on their toes not too appear too dictatorial OR too weak. The constant ups and downs of politics thus serves to ensure that no matter what data-analysis and monitoring skills a govt deploys, the Individual will always have the power to bring a change.
On the other hand, in one-party dictatorships like China, there is no power struggle between people or between parties. The party is supreme and its authority over people is unquestioned. No free media means people can whimper and protest all they want but their voices will always be suppressed. When such a state has the kind of data on its citizens that China has, you are looking at a dystopia of consistent, state-controlled opinions, no outlet for dissent and an absolute choking of human's free-spirit.
The problem that we have now is that China now has the technological (stolen or bought from the west) and the financial muscle to extend this experiment to democratic state. They have already been doing it for a while but democracies are waking up to the threat. That is why, the recent marking of several Chinese organisation as diplomatic entities by US is a welcome step.