I think I have to agree with some comments that it's very unlikely companies do get a lot of value from these surveillance programmes. From a side, it all sounds super advanced and promising,but in the reality it's usually more down to earth: After buying a dehumidifier from Amazon, they keep sending emails with various dehumidifier options.. Like I need 20 of them. Sainsbury's tracks my shopping via Nectar card just to give me 5p discount on the cucumbers and crisps I sometimes buy. Where's all the sophistication? With all the tracking and analytics, one would think they could better track shopper sentiment,yet thousands of tons of unsold food and other products get dumped every day. Also,just because someone is doing it, that doesn't mean it's profitable. A lot of CEOs get sold all this AI/ML hype and because they have genuine fears of being left out, they just roll with it.