This is not to downplay or deny culpability, and I fully recognize that Holmes and Balwani probably helped to cause untold hardships to many innocents and deserve to spend some quality time in prison, but I can't help but think that the pair of them fell perhaps knowingly into a honey trap baited by the financiers, and that the financiers got away with it again.
Forty years ago I went through something very similar in a very similar field. The main difference was that my product actually worked very well, but when the financiers got involved to take the company public they immediately started to spin everything: sales projections in the prospectus were embellished to the point of fantasy - for example I knew that the world supply of components for the product could only meet half the projected sales, and I said so repeatedly - and I knew that when it all came out in the open (after the financiers had spent a small fortune on hundreds of lavish hotel dinners and - I kid you not - 'due diligence' trips on Concorde) there was just one person likely to be the fall-guy explaining why the projected sales hadn't been achieved. That would have been me.
It was clear to me that the business being promoted was itself entirely secondary and just a vehicle for the main objective, which was fleecing investors.
As it happened, through a quirk of legal fate as an existing director and shareholder in the business I had the right to prevent the flotation by a single vote and I exercised it. That left me temporarily unemployed, stony broke, and threatened both physically and by bailiffs but my conscience was clear.
If anybody comes to you with a get-rich-quick scheme, no matter how it's dressed up, you have a choice.
I guess Holmes and Balwani chose poorly.