Surveys of heroin addicts actually show that despite increased production of opioids, the number of addicts starting out with prescription opiates decreased from 2005 - 2015. So the increasing availability of prescriptions did not result in heroin addiction.
https://www.ncbi.nlm.nih.gov/m/pubmed/28582659/
RESULTS: In 2005, only 8.7% of opioid initiators started with heroin, but this sharply increased to 33.3% (p<0.001) in 2015, with no evidence of stabilization. The use of commonly prescribed opioids, oxycodone and hydrocodone, dropped from 42.4% and 42.3% of opioid initiators, respectively, to 24.1% and 27.8% RESUuLTS: In 2005, only 8.7% of opioid initiators started with heroin, but this sharply increased to 33.3% (p<0.001) in 2015, with no evidence of stabilization. The use of commonly prescribed opioids, oxycodone and hydrocodone, dropped from 42.4% and 42.3% of opioid initiators, respectively, to 24.1% and 27.8% in 2015, such that heroin as an initiating opioid was now more frequently endorsed than prescription opioid analgesics.
Heroin. Horse. Gets many. Many musicians. Jerry comes to mind first