Do you have any idea how much Purdue profited from this crime? 
They mis-represented their drug to everyone as being non-addictive and/or less addictive--a complete lie, and they knew it at the time.
Yes, the physicians should have been more vigilant, absolutely. However they did not 'profit' in the same way, or to anywhere near the same extent as the company did.
Company management, and anyone else on board who was involved in this murder case, should go to jail.
Monsters.