Local too poor for PADI?
If they are poor, they wont even want to take up diving as a hobby or to pass-time. Should they decide to pick up, mostly as a job.
There are many local DM, Instructors in Thailand, Indonesia and Malaysia. During the course, they dont get paid, the operator will feed them. When they are good enough, they will be attached and does what a DM do, still without paid, just food. If they are lucky, the divers will reward him with a little token of appreciation. Once they are done, they will work for the operators with little paid and free to go after sometime. From then, they will work in Sipadan, Layang Layang and so on with income and able to feed their families, still as a job, not hobby.