Well I suppose the more backwards things get the more the people will be crying out and eventually they will go into full revolt as they learn what is being done to them.
I think if you look at the history of patient/doctor relationships over, say, the past 50 years or so, it makes a bizarre sort of sense. What I've heard from older relatives is that up until about the 1990s, many doctors gave patients only minimal information, and patients tended to be passive and do whatever the doctor said.
(Cancer patients, in particular, were not told that they were dying. The doctor would tell the family so that they could prepare, but not the patient. There'd often be this vast conspiracy between family members coming to the hospital and pretending "Oh, everything will be fine," and patients feeling themselves deteriorating but putting on a brave face so they wouldn't upset the family. Horrible!)
Contrast that with today, where there's actually too much information (drug companies hammering consumers with TV ads, sketchy "medical" websites, brochures promising "miracle cures," and don't get me started on Jenny McCarthy and her ilk). Some patients spend their lives scouring the Internet but don't know what's reliable and what isn't. Others, like your unfortunate friend, may still have that "doctor knows best" attitude.
Also, given the patchwork availability/affordability of the U.S. healthcare "system" - and also human nature - a lot of people are not proactive about their health. They wait until something goes wrong (like a heart attack) and figure "Doc'll give me a pill for that," where they'd likely have been much better off exercising, watching what they eat, etc. than ending up on a raft of medications.
In a society where health started with good prenatal care and where good health habits were taught even in pre-K, wiser choices, better quality of life, and lower medical costs would be the norm.