There is one thing i don't get : If users get scammed by a facebook ad, they should lose trust in the platform, and share that mistrust. I get that you can earn

There is one thing i don't get : If users get scammed by a facebook ad, they should lose trust in the platform, and share that mistrust. I get that you can earn some money with new users as they enter the platform, but after a while, you should not find any more suckers, because every one will be educated (at a cost of a cheese)