Cocktails With Patrick

Why do many famous people seem to survive terminal diseases? Reflection of our health system or famous luck?
I work in the health field and see many folks with terminal diseases more often than not, expire at some point. I originally noticed growing up, famous folks survive like Magic Johnson with HIV (he contracted it before miracle cocktail meds) when the disease was almost a death sentence.
More recently people like Patrick Swayze (pancreatic cancer which is the more dismal) and Halle Berry (not fatal, however, she claimed she has cured herself of type 1 diabetes).
More recently in the news, Ted Kennedy is in remission from brain cancer; which, by all standards is a stretch due to the severity and his age even with treatments. There are scores of others different types of cured or prolonged ailments. My curiosity stems more towards the question of why (if it isn’t just luck)?
modern celebs can afford better healthcare — best doctors, more tests & more precise diagnosis, advanced treatments, expensive drugs
Wes Hutchinson Live on Cocktails with Patrick