It seems they drive the research agenda and "invest" in research that means profits to them leaving aside illnesses that are "rare" or will not have a significant $$$ return. They use tricky advertisement strategies including co-opting doctors to prescribe, they dedicate much effort to lobby congress and others so laws and so on don't go against their interests. They back up NGOs that are all for diminishing the personhood of patients while are not eager to sponsor self-advocacy groups or other groups that seek to empower people with mental health issues. All these things and more i heard