Why would anyone share their moneymaking method?

To leak an money making method for me personaly, would be the reason if the seller didn't delivered as promised. Such as 24/7 customer support but instead I got some poorly copy paste advice, so the seller is not even trying to help me make money. So that's just more reasons to get over your bad investment and share it public. This is my opinion only. If the seller is really HQ and delivered as promised, there is nothing left but to respect the seller and keep the method as secret as he wanted.