OT: Why is every company's response to "deceptive ads that sneak in via programmatic ad exchanges" (AKA: every ad ever) to review some subset of them, after the

OT: Why is every company's response to "deceptive ads that sneak in via programmatic ad exchanges" (AKA: every ad ever) to review some subset of them, after they're already displaying them, instead of ads requiring approval before they are ever displayed like they should?