This is one of the most attractive aspects of the model; that is giving back to teh community in a way that offsets some of the social costs of cannabis liberalization. However, it is not as much of a shift as such; cannabis use will likely stay the same, but the money for  treatment programs and other recidivism programs will now come from the expect revenue from cannabis taxes.  Again, it is a win win situation between individual liberty and responsibility on one hand and a recognition that these support programs are effective and should be invested in.