This sounds like a business opportunity for somebody, I guess there reason nobody is doing this is because there's probably a lot more money to be made from spy

This sounds like a business opportunity for somebody, I guess there reason nobody is doing this is because there's probably a lot more money to be made from spying on users and gathering data on them. It's a pity because it ruins the experience for all concerned. The sooner people become more privacy aware and legislation like GDPR sees wider uptake, the better for internet commerce.