That's just a hazard of doing business in that trade. It's both random, and insufficiently fatal to enough of them to create a deterrence effect.
But you think that if the government starts executing them, that will magically make some huge difference?
It did in China. It utterly wiped out the drug trade in China. They do it in Singapore, and it works there pretty well. They are trying it in the Philippines, and so we can keep an eye on the situation there and see if it makes a difference.
I am betting it will.
Without any judicial process. Is that what you want for the United States of America?