Depends on what you mean by "make it". Banks quite often convince people to by into funds they know won't perform. They "make it" in terms of fees, but I don't find it very admirable.
>Banks quite often convince people to by into funds they know won't perform
Please provide an example where a bank "convinced" people to buy something it "knew" wouldn't perform. That would be fraud. I'm sure it occurs, but certainly not "quite often".
And, no, Goldman Sachs going short securities it sold as a market-maker isn't an example of such.
