It won't work. Look at the drug wars in Mexico and central America. A lot more people dealing drugs kill each other. It's a much more dangerous game over there. Has the possibility of getting murder stop it? No. there's a lot of money to be made.
I could see a militia being created in response to this war.
its already working and he is doing a great job. President duterte, really hate drugs, and honestly hes very strict, even smoke cigarettes in the public areas are banned in the ph. he can do what he said, for now He eradicate all drug sindicate and some of the drug lord in the philippines. This campaign will be helpful specially to those people who suffering to addiction. And correction, they all do it for the sake of the protection and development of the society.