That is the scheme. It's old. It still works. The web, like TV, is absolutely perfect for this scheme. The audience that includes people who would pay for this sort of advice is the one that watches TV at odd hours, and they are now increasingly surfing the web.
It is the rough equivalent of the infommercial.
While it may be theoretically possible, no one is going to make five figures per month except the person selling advice on how to make five figures per month.
I don't know how these sellers sleep at night. Certainly they can do well. But they are _deliberately_ preying on the weak. If that's the type of "business" you want to run, go for it.
But it has always been pure sleaze and will continue to be so for the forseeable future.