Although I haven't thoroughly studied the issue, this take on drug addiction makes a lot of sense to me. If Johann Hari is correct, and I think he is, then this would explain why drug addiction is viewed as it is presently is by ruling class authorities: they don't want Hari's research to undermine all their propaganda about the benefits of American capitalist society. History teaches us that whenever evidence of a sick society contradicts ruling class ideology, the latter will always be purveyed by their ideological institutions until they are forced by revolution to relinquish power.
Everything we thought we knew about addiction is wrong.