Those ads you see in FB and next to google results generate money for them, not for the websites whose content you're looking at. Basically the portal collects

Those ads you see in FB and next to google results generate money for them, not for the websites whose content you're looking at. Basically the portal collects money from helping the advertiser match closely to people who will buy, but the content platforms don't have that info on the user and can't influence their decision making process as much.