Earlier quoted context omitted.
All regulation is hard to enforce. Have to start somewhere, and then you keep pulling the ratchet via policy.
If you create regulation you can't effectively enforce it can actually make things worse. This is why you can buy fentanyl on every corner, but now the people supplying it have small nation-state tier armies of guys in hiluxes with machine guns and truck mounted .50 cal anti-armor guns. Not saying that will happen with ghost jobs, but it's not a given things will improve.
Also, it seems that you're making a parallel case that it makes no difference to the fentanyl market that there is a law against fentanyl, which makes me think that you apply the Law of Averages to every change that you hear anyone suggest.
e.g. if you make a law against fentanyl, some people will stop selling fentanyl, while other people will be more attracted to selling an illegal drug, therefore a law against fentanyl will have no effect on fentanyl use or sales.
The Law of Averages is not real.