For example, polio was cured less than 60 years ago. We know much more about the effects of radiation (sunscreen, anyone?) than we did 40 years ago. Genome sequencing is becoming slightly more affordable (than even 10 years ago) due to tech advances; we can predict hereditary disease in some instances (BRCA mutations, etc).

Steve Jobs is actually a terrible example. To quote wikipedia, "Despite his diagnosis, Jobs resisted his doctors' recommendations for medical intervention for nine months,[170] instead consuming a psuedo-medicine diet in an attempt to thwart the disease." Pseudo is Greek for "false." And if you want cancer solved by the time you get it, you probably have to pony up the money before your diagnosis.

I'm not disagreeing that medical advances are relatively slow, but on the scale of human life, Page has probably at least another 40 years of advances left to see. And that's a lot.