I am Italian, let me express my humble opinion:
The distance between organized crime and crime is the same as between the Earth and the Moon.
It is true that all places in the world have crime, but it is not true that all places in the world have organized crime.
Also, crime you can eradicate, organized crime you can't eradicate.
For these reasons, and more reasons, Thai authorities can put out of their minds the idea of eradicating organized crime in Phuket, at most they can arrest a few foreign criminals to show off or point fingering in front of the cameras, the favourite sport of Thai Police.