Exactly. It's basically spam: there's nearly no cost to send it, so even an abysmal success rate is likely to return a fat profit.

I've heard that the average reward is about $500. You can afford a lot of rejections per success at that rate.

Never mind that you're destroying the effectiveness of those programs, driving staff nuts, and generally making the world less secure; that's their problem, right? (Sarcasm, obv.)