Imagine for a moment that you had the ability to save millions of lives, improve the quality of life for billions of people, alleviate the suffering of the afflicted, and cure those who were ill, all while making a tidy profit. You hold this power because you are the CEO of your own pharmaceutical conglomerate, and no one else can take it away from you.
Are you going to put it to good use? Being completely selfless might not be the best strategy for your company. The unsettling reality (is there a salve for that?) is that certain treatments are more lucrative than others, and illness is good for business. Is there an ointment for that? You have now entered the realm of Big Pharma.