Did you really not know that? That's a genuine question. I really want to know if that thought ever crossed your mind before. Not trolling or trying to be a dick, although granted it comes off that way.
Really, please respond because I don't understand how I keep seeing this sentiment. I don't like the popups either, but that doesn't stop me from understanding the how/why I'm subjected to them.
They would go out of business pretty fast.
This goes back to loyalty-card tracking, and now includes facial recognition, WiFi and Bluetooth trracking, and more. As well as purchase history surveillance through credit and debit cards or "smart pay" systems.
I am not trying to attack you or imply that you should always be maximally productive.