The latest BCS figure put 8.8% of the population as having ever used cocaine powder, 2.1% who had used it in the last year, and 0.8% in the last month. We can probably assume that the 8.0% who had used it ever but not in the last month are not "addicted." At the most it suggests that 1 in 11 might be "addicted," even thoiugh the 0.8%/last month group will naturally include some first-time users, or those who may have coincidentally used in the last month after a period of abstinance.
Aren't you assuming here that people who are addicted, stay addicted?
I've know a few people with cocaine issues. These usually didn't last very long.
As soon as people realise they have a problem, they tend to do something about it. (anecdotal, I know).
Most of the addiction problems I have witnessed were people who could not contain themselves once the weekend/paycheck swung round.
They didn't use on a daily basis, but Friday night they went and bought cocaine.
There seemed to be a big social component to this. They ran with a group that used cocaine and if only one person in that group would decide to get some, the rest just couldn't say no. At some point the just didn't have sober weekends any more.
During the week they'd complain about fatigue, being broke and nosebleeds and vowed to stop. Then Friday came round...etc, etc, etc.
I've seen people stuck in the above pattern for several years.
But it is a pattern that can be easily broken without counselling, apparently.
At some point they got responsible jobs, or got kids and their drug use just disappeared.
I've only known one person who would use daily.
She worked in management and was a real go-getter. She started doing small quantities of cocaine during her work day (quick line in the bathroom) to prop her up during work.
That became a problem real quick. (well, duh!) But also something that she decided to stop very radically.
Based on my own anecdotal evidence, I think that there is a lot more 'weekend addiction' than daily use.