Big Kahuna : "The fact that RBA take most of their pilots from New Zealand, Australia and UK, is simply, that is where they can find the best pilots that meet their employment criteria. Licence and experience"
You can go and tell that to the marines.
In the early 60's when Brunei was fighting for independence the Sultanate was against it. There was a rebellion against the old Sultan. The British army was called to quell the rebellion. The old Sultan stepped down but the royalty got 30% and the British got 70% of the oil. The country got nothing much except free of taxes.
So now you know how the present Sultan ended up to be the richest man in the world more than Bill Gates.
After that event the Sultanate never trust its own people. Even the palace bodyguards are manned by the Gurkhas under the British command.
It was no surprise that the airline industries were treated the same.
Your argument about getting the best pilot does not hold water if you don't know (don't want to know, or trying to conceal) the history of the region.