What do you think "consensual and non-coercive" means in the context of addictive behavior?
It is clear that they are undertaken with free will, and ended similarly thereby. All of AA and everyone who's ever quit smoking stand as evidence.
The ones who actually want to quit, do.
It's unfathomable to someone who hasn't smoked.
Should we factor this in, or is public health department a nanny state intervention?
Playing the "no one's pointing a gun to your head" card and claiming it is therefore "non-coersive" in defense of targeting and manipulating addictive behavior may very well be profitable but it's delusional and downright dishonest to everyone, including yourself, to think it isn't exploitive and conducive to serious personal and social issues. You need look no further in the historical record to see how this plays out than the tobacco and alcohol industry.
That is not accurate.
If you're really interested in continuing to debate whether your perspective of addiction should be adopted by others feel free to search Google for "addiction" or "is addiction a lifelong problem" or if that's something you don't have time for start with the first Google result I pulled up: http://aspe.hhs.gov/hsp/subabuse99/chap2.htm
There are plenty of other, better, sources that will provide more thorough descriptions of both the physical and psychological characteristics of addition. Practically all of them acknowledge that addiction, once attained, does not grant an individual the luxury of choice as you entertain it. One can certainly choose to seek the tools to control the impulses of addiction through willpower (be it internally or externally inspired), but that will never mean they can choose to make the underlying addiction go away and never bother them again at any point for the rest of their lives.
Have you ever met a "former" addict? Plenty will tell you it's not as simple as that, unless you're using your own novel definition of "choice," "free will," and given studies generally show genetic predisposition is a factor, "born with."
The lines of free will and accountability are blurred by things like mental illness, addictions, childhood naivety, etc.
If you want to make your business about manipulation of the customer, don't pretend to be morally pure. You are scum.
That's not the case. People choose to stop being addicted to things all the time.