Every single one of the revelations you've mentioned was met with public backlash, followed by either a misinformation campaign or intense dog-wagging. This is called manufactured consent. For example, let's look at Cambridge Analytica. When it was revealed that a military contractor was hired to subvert the 2016 Presidential election, the dominant story in the alphabet-soup media was a twitter tantrum from Trump. As it became clear over the next few days that the story wasn't going to be buried easily, the narrative was quickly shifted away from the subversion of democracy to blaming Facebook for leaking user data, culminating in parading The Zuck before Congress. He played his part perfectly: no bread, but enough circus to keep the masses from thinking too hard about what it means for an election to be free.
People do the calculus to decide if risk is greater than reward all the time. It appears ubiquitous connectivity, for most people, is far more rewarding than risky.
Technically you're right but what you seem to be missing is that people (in general) suck at risk assessment. Although they are doing "the calculus", most of their calculations are based on heuristics that just don't reflect a rational analysis.
That is why so many people fear plane travel more than car travel, immigrants more than cigarettes, and pharmaceuticals more than "raw water".