I think the lesson to be learned from e.g. the Cambridge Analytica scandal is that given enough computational power, mass surveillance is indistinguishable from targeted surveillance.

I feel like I should be putting on my tinfoil hat saying all of that, but the reality is that these systems are less and less throttled by the availability of human brains to process the data the automated surveillance systems collect. We made a mistake in thinking that labor costs could ever be an effective guard rail for these tools.