They can't just outsource your current jobs.
Maybe taken in the wrong context, however as an example, outsource IFE work then a few months (or a few years) down the track sack a few more people. Who cares if the IFE service provider is using 457 visa's.
Get rid of all 3rd party work and let the competition build themselves up. Once again who cares if they use 457's?? Obviously not the Labor government.
Stop training B2's and let them die through attrition. Ramp up Type A training and let the B1 tradies go.
It's all happening as we speak.