The Jungle is a piece of historical fiction that was accurate while remaining fictional, was of course designed to make a point (as all meaningful writing is) and captures an era and expresses in a clear way the inevitable plight of non-wealthy people subjected to capitalism. To dismiss it in this way is to dismiss all of history itself, which is simply accurate stories about people's lives. To not read it is to plug your ears and shout "I can't hear you" about what it's like to be poor or working class under the brutal regime of unfettered free markets and the problems and horrible abuse these people face. But hey, I wouldn't want to complicate my clean and pure political ideology which is completely coincidentally directly in service of my own personal pocketbook and power with a modicum of understanding about the lives of others less fortunate, would I?

Your examples sure are clean. But the real world is dirty. What exactly is "juice?" Are you, a Libertarian, proposing that the government spend years and millions of dollars creating a U.S. official definition of "juice" for labeling purposes? What happens when inevitably companies skirt the line?

And sure if I sell you poison on purpose knowing it's poison wanting to kill you that's murder. What if I'm a company that produces milk but I cut corners and possibly some number of milk products happen to be poisonous, though I never try to poison anything? What if I build cars and realize they will explode and kill people but figure I'll make more money selling them and dealing with the deaths than a recall? What if I use my vast power and wealth to systematically suppress all knowledge about how dangerous my products are and market them as safe and "doctor-approved", watching my smoking customers die thousand after thousand? What if I sell investments I know are bad, but I lie and fake ratings for them and sell them as high-quality, defrauding people by the millions? What if I extort an entire state by manipulating its energy supply? What if I poison rivers, drinking water, give communities cancer, lie about emission test results and poison the air, create children's toys with lead all because it's more efficient? All of these examples I cited have happened, recently, in our currently non-Libertarian society, and are nearly identical to your example and nobody was charged with murder. Libertarians support fewer regulations, less oversight, more market freedom -- the freedom to do all of the above with even more impunity than they do now.