No one talked about a general cure for cancer here. What I meant is a general cure for the specific disease. Specifically, it's easier to cure a patient with Biliary Duct Cancer than to find a cure for Biliary Duct Cancer.

"Cancer isn’t one disease, it’s a catch-all term for a bunch of vaguely related ones"

Also that's a pretty common misconception, cancer is pretty well defined, abnormal cell growth. I agree that there will be no single cure, but it's like a viral infection, or a system intrusion. There may be many causes and cures will be different, but there's no disagreement over what is an isn't a cancer or a viral infection.