I've heard this a few times. It's certainly compelling to me, I guess it's obviously a hard thing to know given it will be heavily debated by those companies and it's always going to be obscured by them to maintain a mystique, whether it works or doesn't since in both cases it helps to keep everyone a little bit in the dark.

Part of this idea that the surveillance economy is not nearly as effective at controlling consumer behavior as claimed makes me wonder if I'm being unnecessarily paranoid when I jealously guard my privacy since it seems it could be that my data is taken potentially in service of nothing. Nevertheless I instinctively just don't want to take the risk that hooverig up all that data really does work for manipulation and control.