I don't think I see enough discussion about what this means for privacy. There was some protection in the fact that it was prohibitively expensive to get someone to listen to every single one of our phonecalls/read all our emails/etc. Worrying that this will no longer be the case.
Why do you think there was a mass surveillance of American domestic communications since forever ago, as leaked by Snowden? This technology has been available since then and can effectively summarize millions of pieces of communication.
They've created a huge library of unorganized data. The difference here is they now can spawn a million untiring AI private investigators / librarians to organize this information into coherent "case files".
At least for me, until this point I've had a feeling of anonymity in the idea that, while my data is being slurped up, I'm just one data point in a sea of other 'normal' people. There would be little value in spending government time and effort tying all of the web detritus together for me. The juice would definitely not be worth the squeeze.
However, when the cost of this effort is nearly zero, that now becomes a different story. The balance of power between government and the people it rules is going to radically shift.