This is the type of thing that I imagine the "data suckers" (Facebook, Google, Apple, Amazon) are able to do regularly with the complex data that they have and the advanced tools that they have at their disposal.
I can't see yet to what end that ability would be trained, but I consider that ability to be akin to the state's ability to see into my backyard from space: I know they can do it and it doesn't harm me immediately that they can, but there's something net negative about the power/ability imbalance that makes me feel uncomfortable. Of course nobody is going to use that awesome power on someone as inconsequential as me, but...
I can't see yet to what end that ability would be trained, but I consider that ability to be akin to the state's ability to see into my backyard from space: I know they can do it and it doesn't harm me immediately that they can, but there's something net negative about the power/ability imbalance that makes me feel uncomfortable. Of course nobody is going to use that awesome power on someone as inconsequential as me, but...