If you are interested in statistics about the success of treatment programs you can google it and do the research. It's important to think about addiction as a disease and treat it as such. It spreads like a disease and it inflicts damage across society like a disease. It's killing 60,000 people a year.
I will say that I can see the damage here in the Detroit region from another untreated addiction epidemic, the crack crisis from the 80s. So much of the regions ills come from treating it as a criminal justice problem instead of a health crisis. A generation was lost to either the drugs themselves or the war on drugs.