Why not we reverse the table and see the picture on the other side.
Airline used to sponsor pilots for the entire training in return hoping that they will stay and finish their contract and finish paying their bond.
But guess what and especially the expats/foreigners, once they have the hours and experience, grab their passport and leave the country and go back to thier own country or other airline.
Airlines end up losing millions and end up becoming a free scholarship training school for those who think the world owes them a job and everything should be free of charge.
So reverse role, imagine you are the boss of an airline, are you setting up an airline to make money or love burning cash just to train pilots who run away?
That is why it is less risky to hire local pilots and not get them upset for having foreigners stealing their jobs.
So who is the culprit for pay to fly? It's the senior pilot who are most of the time critical of p2f and could not care less those new CPL 200 hour pilots whether they get a job or not.
Who is there to protect the airline? Has to be a win win situation. Airline don't risk training fee training runaway pilots, while foreigners get hours and experience plus grabbing slots from locals.
But of course, there are huge success for those who got the hours/experience and are currently flying for major airlines in the world.