I have sadly found that 99.9% of people(excluding maybe the Amish, and some, very few religious groups) will do whatever their employer, industry dictates, as long as it's legal, even slightly legal.
I once walked out of Chiropractic School. I lost a lot of money. I walked out because of complete disbelief in the Subluxation, and the subsequent profession.
Besides my astonishment over the denial by the students, and staff; I was most bothered by, "Hay--it's legal? It might work, but the studies are underfunded?"
This was my over twenty years ago. When ever I encounter sonemeone, and there profession, I wonder what this guy(usually in a tie, with a degree) would do for the organization in order to make money for himself, and spawn.
99.9% of the time they go along with the crowd. Sure, after a few beers, they become pious ethical warriors, but they are scared sheep.
Psychologists have proved it over, and over again(Milgram experiment comes to mind), but everyone thinks they are different.
I have never found a completely ethical person. Ethics are the one trait we seem to be loosing year after year. And sure, every new generation thinks they are different, but really aren't.
My hope is ethics will be talked more about in companies, and society.
(If you're from a poor, unsupportive family don't "rock the boat"--you honestly can't afford it. I learned the hard way. Plus, it's usually the rich boys who need to take the ethical stand more often.)