Yeah, I could see the financial value dropping, with businesses less willing to pay as much for harvested data, but I don’t see a point in time where they don’t attempt harvest every last piece of data on the off chance somebody wants it though. Advertisers paid insane amounts of money for targeted information, but even Google’s seen a huge contraction in their advertising revenue.
Doesn’t mean they aren’t frantically trying to harvest data more aggressively (just recently tried to bake it into the internet itself), just that our data is getting cheaper.