Man all that data is over rated and worthless. Monitoring ppl 24x7 is like keeping tabs on your cat 24x7. Nothing that interesting is going on. That doesn't mean the data isn't over priced and over sold to schmucks. But that game has been going on for so long everyone playing the games knows how useless the data is.
For advertisers it isn't. Signals for purchasing that could be had for cheap are extremely valuable. Especially if they're reliable. If Amazon could get me a qualified lead for the half the price of Google Ads, that would be a game changer.