The question is completely mercenary and vile. It reinforces my belief that there is no collective human enterprise in the world eviler than Goldman Sachs. With that said, there is actually a way to make money on curing a disease.
Whomever comes up with the cure for ‘x’ disease, gets a percentage (higher at first, declining over 10-20 years to 0) of the costs that government insurance (medicare and medicare) and private insurance companies shell out every year to treat ‘x’. Plus the company, school, or researcher that discovers the cure gets their compensation for the cure itself.
Incentivize a cure, reduce costs over the long term, and leave residual cash flow for the cure. Everyone wins in the long term.
Big Pharma does not want a cure for diabetes. They want people to keep buying drugs for life. Same with heart disease and statins, which are dangerous and completely unnecessary.
Preventing a disease like cancer is nowhere as profitable as selling drugs and procedures as treatments.
Realize that tax dollars funds a lot of the research that these pharmaceutical companies benefit from.
So they get to privatize the profits and socialize the expenses.