Well, sure they exist, stealing and murder still exists too despite our best efforts to eliminate them. The point is that they are on the fringes of our society, I get maybe one spam email every few days or so and seldom bother to review the thousands trapped in the Spam folder. Robocalling never took of in my country either, and none of these scummy industries is receiving trillions of speculative investment like AI does. Social norms work, even imperfect as is their nature.