NJS has cancelled over 40 sectors this week due to lack of crew. Where exactly do you think these other operators are going to get pilots from?
Right now the company would probably would have the numbers between Australian expats, disgruntled VA FO's, Older QF SOs/FOs, and Kiwis who would take jobs flying a contracted QF operation. However once they have drained that pond then QF are playing in a world market with well below market salaries. Whether they want to risk their brand on that is a decision they have to make.