Physical drugs are relatively easy to not get into because for the most part, the majority of society doesn't use them and their users are still mostly marginalized. If your current social group are drug addicts it's possible to find a new, healthier group.
Digital drugs on the other hand are something that nearly everyone uses and thus you have to use them if you want to effectively fit in and participate in society. Not consuming these drugs just makes you an outcast especially in a ruthless environment such as school.
The solution is regulation to make digital-drug-dealing illegal. Kill this whole "attention economy" with fire and make such a disgusting business model impossible to operate and the problem will self-resolve.