I had these thoughts as well, especially about advanced AI,which can go far beyond of what nowadays machine learning is capable of. Yet, if mass dissatisfaction is big enough, a lot of things cease functioning, introspectively of how strong they are. However I agree with the sentiment,that it will most likely be much harder than it used to be even 100 years ago.
I think the worry with this new form of authoritarianism is that it will be so good no one will have the chance to stop it.