Apart from him getting caught up!
Martin was convicted of securities fraud and sentence to 7. I think this was payback for trying to mess with the insurance business.
His Wiki bio says:
The charges were filed after an investigation into his tenure at MSMB Capital Management and Retrophin. U.S. Attorney Robert Capers said, "Shkreli essentially ran his company like a [Ponzi scheme] where he used each subsequent company to pay off defrauded investors from the prior company."(Martin Shkreli - Wikipedia)
Isn’t this pretty much every company selling for 1000x PE with negative cash flow. Bitcoin comes to mind.
I saw a couple of his finance lessons on youtube. Pretty cool actually.