When you're removing supply, but not disrupting demand, a way will be found. The real answer is to legalize & sell it, no more drug dealers, remove the overdoses because it was cut with fentanyl, no longer fund gangs = less homicides
On the other hand, there are huge profits and motivators for money laundering. Ask HSBC, Bank of America, Wells Fargo, Western Union, or Citigroup.
Demand for a good (or drug in this case) it is not inevitable. It can be disrupted too, it's not a given.
But the demand for any good cannot be disrupted without first and foremost removing the supply. So we must start disrupting the supply, which shows up every day at 6am on our street corners.
So while we're cracking skulls to achieve your drug-free nirvana, we've basically consigned a generation to hell. Constant police patrolling and intervention in their communities, extremely violent narco-traffickers, and yet somehow no treatment for addicts.