It's the same strategy that they've been openly employing for years with regard to tobacco: they heavily tax cigarettes, raising the prices to make it harder for people to justify the expense; many quit for money reasons, while others continue to smoke and pay exorbitant rates to do so. Then, they take the tax revenues they make off these people and use it to pay tobacco farmers *NOT* to grow tobacco. This, in turn, raises the price of tobacco paid by the cigarette companies who pass that price increase on to the consumer, making cigarettes even more expensive and snowballing the entire process over and over again. It's their warped way of legislating morality... *THEIR* morality, not yours or mine.
Also, I'm convinced that these are meant to be test cases. If this gets enacted in Chicago, you had better believe that, in 20 years, they will try to roll it out on the national agenda, touting how successful it's been in Chi-Town for 2 decades. I say nip it in the bud now!