Well it's simple, because the better you can advertise and market to individuals, the more product you can sell and the more money you can generate. And if it's

Well it's simple, because the better you can advertise and market to individuals, the more product you can sell and the more money you can generate. And if it's your business to market to people and generate profit, you are more inclined to find any method you can to market to people before your competitors beat you to the punch. The corporate world and particularly finance industries have been using data to make better informed decisions for decades. The creepiness of advertising I don't mind, because it's simply based on data to provide better recommendations and makes sense if you have the data. For me it's the frequency of advertisements being shown to me all the time. If I had to choose, I'd rather have more informed advertisements than a massive array on them. For example, when watching TV if I have to see commercials I'd rather see them about the latest graphics cards than about the new L'Oreal skin cream.