Even in the midst of Enron rising so fast, there were a ton of people who knew something wasn't right and none of them did anything about it. And why was that?

Money and a LOT of it. Management didn't want to do anything because of they were getting rewarded for how well the company was doing. Why kill your own gravy train? Why would the auditors stop it? The same reason, they were making millions in consulting fees and had no reason to stop the train. Congress could have done something, but thwarted Arthur Levitt's proposed new rule barring accountants acting as consultants. The rule was shot down and the SEC was threatened with losing their funding if they did this by some 50 senators.

So even if this software predicts rouge traders, it can only alert the right people to do something about it. And even if it does, what are the odds those people have the morale compass to make the right decision? Probably less than 50/50 because of the money involved.

Having the software is only the first step in a long chain of decisions which are made by the weakest link in the chain, the human being.