I understand the current QF SO intakes are experienced Captains and FOs from the regionals and LCCs. In the past I understand the new intakes were way less experienced, a lot from single pilot charter operators. When you take a good look around GA there simply aren't the number of GA operators to draw from and the number of flight training organisations who would train pilots are rapidly disappearing. I reckon you'll see a drastic change in where new intakes come from once the pool of those prepared to leave regionals and LCCs dry up.
It will be interesting to learn how the regionals and LCCs replace the pilots they've lost.