I might be completely off here but it almost seems like they don't actually want people to quit. They just want the tax money.
I know when I smoked I could get a 2 week supply of patches OR gum (at the time) but that just wasn't enough to actually get to the point I needed. Maybe for some people it works but the success rates aren't that great, if I recall.
EDIT:
I just wanted to mention that, I feel this, is completely the wrong use for taxes. They should be for raising revenue not for changing behavior. I don't have a great solution so I won't even attempt to go there.
Raising the price through taxes is likely to put off new young smokers who will find it incredibly difficult to afford. It probably won't deter as many adults who can afford the price increase even if it does piss them off. I've also known some people who have switched to cheaper, lower quality cigarettes because of the price increases rather than quitting. In other words raising the prices has caused them to seek a worse alternative for their health.
Although I am a supporter of (and user of) free public health care, doesn't it make sense to charge people more for insurance if they are doing something that is proven to seriously damage their health?
EDIT: I just wanted to mention that, I feel this, is completely the wrong use for taxes. They should be for raising revenue not for changing behavior. I don't have a great solution so I won't even attempt to go there.