I don't think anyone will really share their strategy on how they make money, they can even share strategies that can help anyone with strategies on how it works but the strategy formula itself I think is not what is being said.
It's like a baker who will only teach the basic how to bake but the secret ingredients on why it tastes good when it's put in the oven after cooking, he won't tell you that. He will just leave it to those who see his basic tutorial on baking and the same goes for trading on how to earn passively from it.
Well yes, you are Absolutely right, although when it is Discovered, whoever discovers it will say how it is, that is what can happen , information cannot be left hidden, Between heaven and earth there is nothing hidden , and that has been Proven , however for now the companies that share their way of trading to educate others is Something I respect a lot and if it is won I believe that they will do a great job , that in some Way it will be Rewarded to them in life.