Comment by feoren

This is a great list. I would add:

- Megacorporations cozying up to government in exchange for access to this information, for a competitive advantage, targeted advertising, etc. Lawmakers will bend over backward for corporations if they are promised "job creation" in their districts, or it could be lobbying or even straight-up bribery. We have a sitting supreme court member who openly takes bribes and he's suffered no consequences for it. It's not hard to imagine data the government collected in a giant dragnet being shared with generous campaign contributors.

- Laws changing to target an out-group. Remember how the government was keenly interested in people's period-tracking apps so they could imprison people who they suspected had an abortion? It doesn't matter whether your private data could incriminate you now, it's dangerous if it could incriminate you from any future government that is hostile to you.