TB, before it was cured, "supported" hospitals, sanitariums and careers across the country. It was cured. the careers and hospitals and sanitariums disappeared.
Polio, ditto.
Too much money being made from cancer. I suspicion that until something bigger and worse comes along, it wont be 'cured'
Sadly, after my experience with cancer (my Dad) and all the research I have done - I must agree. And I'm studying to be a nurse.
As Chris Rock said: "There ain't no money in the cure!"