Oh, they're not going to CURE disease.
There no money in that.
Parkingsons, for instance. Where do you think the money is...
Curing the disease... that's a one shot thing. One treatment, or pill, or whatnot.
Treating the disease, however... now there's where the money is.
You have a captive audience. They buy the medications, or they degnerate.
It's like diabetes. There's no cure. But there's treatment.
And it's a huge moneymaker.