I've definitely never been accused of being a libertarian before! First time for everything, I guess.
I am definitely highly sensitive to the various profit motives of big pharma (right now I'm small pharma, so I get a pass--still a do gooder). For example, my buddy used to be an exec at AstraZeneca at the time when Nexium came on the market (you may remember Nexium from such infographics as the one you posted a couple weeks ago about drugs that make the most money and how few people they actually help). At that time their previous antacid was about to go generic (prilosec or whatever it was), and they showed the FDA a bunch of data about how Nexium is so much better because it reduced esophageal ulcers or some shit, and the FDA bought it even though they intentionally had suppressed the exact same data for prilosec (or whatever) years prior just so they'd have it in their back pocket years later. Who says public companies don't plan for the future?!
My point about walking is not to totally blame the individual, but when you see people every day who have had limbs amputated because of uncontrolled diabetes, you just want to get in some faces and start yelling "DON'T EAT THE FUCKIN' SUGAR, DUDE!!!" These horses have been led to water, but the social complexities make them indifferent to drinking it. It's not a simple problem, but it sure is frustrating. And in that situation it's really easy for pharma to say, fuck it, here's some insulin, and everyone's happy.