Revenue from “sin taxes” is notoriously volatile and difficult to predict, even when the taxes—such as those on cigarettes, liquor, or gambling—have been around for decades. Although consumption of or participation in these “sins” can change dramatically, analysts at least have historical data from across the nation to guide forecasts.
— Read on www.pewtrusts.org/en/research-and-analysis/issue-briefs/2019/08/forecasts-hazy-for-state-marijuana-revenue