Frank in my books conned and deceived is the same.Sorry but your argument falls down once you accept that the people in Storm were conned. People went to Storm for financial advice and were deceived. That's the issue here, not their motivation for using the services of Storm which you have assumed was greed. Incidentally, this is an assumption rather than a fact! The law doesn't work on assumptions although the CBA resolution scheme seems to be one exception.
There is no excuse for conning thousands of elderly people out of their life savings! If people in our society can condone such behavior, then I'm afraid they are as morally bankrupt as the rogues that are in the dock.
At the end of the day this is about wrongdoing, pure and simple. I can just see the Judge's face if one of the lawyers from the Banks were to stand up and say, "The fact of the matter, my lord, is that these people that invested in Storm were just plain greedy and should have known that financial advisers and banks can't be trusted! After all, common sense and history tells us that greed is good! My clients (the banks) just acted on their primal instincts! After all, why do old people need money at their age? They'll all be dead shortly anyway!"
Silly? Exactly! So let's stay focused on what really happened rather than make it up as we go along!