Payment should not be an option. If people can be executed for a single murder then assisting in starting an epidemic with 640000 casualties (and also serious side effects) should kill the company. Revoke business licenses, seize assets, use it for damage control.

"More than 645,000 people(opens new window) in the United States have died from overdoses involving opioids since the epidemic began"

https://www.fcc.gov/reports-research/maps/connect2health/foc...