And before someone says I think all researchers are somehow corrupted, they aren’t. First of all, I know people who are researchers in the pharm industry, and take it from me, they ain’t getting rich, friend of mine’s wife is an infectious disease specialist, she made really good money in private practice, was a whiz at it (she especially was unreal with treating AIDS patients, long before the cocktails they have now), and she went into research at one of the pharm companies because that was her love and passion and from what I can tell this is common. The problems I see with the pharm industry are in how the products are delivered and marketed, in being allowed to advertise the drugs (the US is one of only two countries who allow that)( and the cozy relationship between doctors and pharm reps that every study, including one by Harvard business school, have said heavily influence what doctor’s prescribe.
Likewise a lot of researchers do so looking for the truth, many of them suffer for it because they don’t choose the easy path. @bunsenburner is right, research dollars are skewed in the public sphere as well, for example, in nutrition research often those getting money are those whose work is more politically acceptable. For example, if your research is on the benefits of a grain based diet (ie the FDA infamous food recommendations) politically it is a lot easier to get funding, the farm state reps will be pleased, whereas if your work is questioning grains as the basis for our diet, or you are working on research let’s say about how bad factory farmed meat is for you versus grass fed beef, it is going to be a lot harder. In medical research, when it comes to cancer studies according to a friend’s brother (who is a top notch researcher and oncologist), if you are looking outside the box, looking at treatments that don’t involve the traditional chemo and radiation approaches, it can be hard to get funding, or if you have a radical idea you want to try and research.
Sometimes that isn’t necessarily a bad thing, for example with the debate about climate change, if we had to rely on the private sector it likely would be heavily skewed towards trying to show that climate change was not man made, etc, a lot of the climate research that has been done has come from the public sector, NOAA, NASA and so forth, as well as government financed research overseas, so bias in some cases can be a counterbalance to money, other times it is a victim of it.