Funny. There was a test for Lupus that was developed, even got FDA approval, and not available to anyone because no Big Pharma company was convinced that it was profitable enough to actually distribute. So much for the big warm fuzzy teddy bear Big Pharma that is out to help people and not suck the cash out of their pockets.
Now, I will agree with you that they do not want anyone dead. Dead people don't buy things. However, neither do cured people. So they want expensive life extending treatments, not cures. This isn't even evil boogeyman conspiracy stuff, it is just good business. Unfortunately, in healthcare, good business is frequently not that beneficial to the patient. Good business is zapping everyone that walks in the door with X-Rays and CT Scans and then treating them for cancer at the end of their life because they have been zapped so many times over the years. You get paid on the zappings AND on the cancer treatments. Win Win baby!
Now, on the subject of ethics. Most of the docs that I have worked with are far more ethical than that. In fact, most of them have donated lots of time and effort to various things. I know a few that routinely do the doctors without borders thing. I know at least one that went to Haiti to assist in the relief efforts. However, there was is also a doc in my area that is known to prescribe more pills himself than some of even the larger practices around here. The drug reps are almost permanent fixtures and they pay for large catered meals for the entire office when they come around. So...all it really takes is a few dirty docs to boost the bottom line considerably.
As for drug reps... I have only been around one that didn't make my skin crawl. He did exactly as you described, and talked about some alternate treatments for children with diabetes rather than just stuffing them full of drugs. All of the rest of them show up with oodles of food and coffee and other such garbage. Hell, the cost of health care would go down considerably if they didn't seem to do so much of their training on cruises and other hot vacation spots.
If that wasn't enough, go examine how the whole patent and FDA process works. They spend oodles of bucks tweaking their existing drugs just enough that they can squeeze out a few studies that show enough of a change that they can qualify for a new patent. But wait! There is more! If the changes are above X% they get a new patent, but below Y% and they can put the drug on the market using the previous FDA approval! That's right, they hit that tiny margin of change and they can rush it to market just in time to compete with the generics that will hit the market from their previous patent all without timely and costly FDA approval process. Who gives a shit about side effects and risks when they can get their drugs on the market at just the right time to keep profits up!
Oh...and just for some real fun... throw Thalidomide Babies into Google and enjoy.
Big Pharma does do a lot for the world in their development of new drugs and treatments, but that good is a side effect. They are a big monster that needs very close scrutiny to keep them from doing some unbelievably dirty things.