That's it - where there is demand, supply will always find its way. Under our current system, supplying is done with no regulation by some thoroughly evil people. We can keep thumping our chests about how more bullets and bombs will defeat supply and demand, or we can look for the least bad solution available in reality.
Well.....demand is often ‘created’ by the suppliers... who are quick to change operations to suite the best means by which they can transport a drug and ease of, with the least risk.
Fentynal is about as easy as one can get....and very low risk of discovery.
The suppliers are the ones who introduce the latest drugs into the markets....and the addicts are always chasing the Dragon....so the cycle continues...as well as the blame game.