That's, not how addiction works. Also, drug use is common ... everywhere. Rich people can afford to hide their drug use, and can also afford legal protection if they are caught.
https://www.therecoveryvillage.com/heroin-addiction/faq/addi...
that introductory experience can be the start of a compulsive cycle that quickly leads to addiction.
Probably better sources, but the boogeyman scare tactics taught to children to keep them from experimenting with drugs is too simplistic and flawed - but hey no one is going to explain to kids how brain chemistry works because abstinence is ... easier.