everyone tearing their hair out over this: the effect of the law is just that insurance overall will be somewhat more expensive in Illinois. There won't be any effect on research or innovation or anything else. Everyone will have to chip in a bit to make sure people with diabetes don't go without insulin. I don't see this is as a big disaster. Illinois has much bigger problems than this.
If people foregoing insulin because of out of pocket cost is a problem in Illinois, fixing it could have positive effects, including positive fiscal effects. So net cost is probably quite small.