I'm a former smoker, I quit just over a year ago. And I live with a smoker who would love to quit. I believe he and many others would seriously try to quit if they could get free or subsidized Chantix or Nicorette gum or patches or any of the other quitting aids. Sadly, any one of the above aids are well over $100 so even though you will more than recoup it easily in a month or two, most people that smoke can't cough up that money so easily. $5 here and there for a pack of smokes is doable. But you can't buy the Chantix or the gum or the patch or the other aids in small increments like that.
What I find is that the billions of dollars that all the states got in settlement from the tobacco companies, possibly only a miniscule amount actually went to helping smokers stop smoking.