This is true as far as it goes and is important to understand in SUD supports and services, but there are very large differences in people's biological susceptibility to addiction that aren't part of this framework.....
Most people think that the reason why people become addicted to drugs is solely because of the drugs themselves. This, however, is far from the truth, as shown repeatedly by scientific studies on drug addiction. The brilliant short animated video below will explain to you why drugs don’t actually cause addiction, changing your view on drugs forever.