Relax man,
Atlas provides CX with some short term flexibility, not more. CX do not like to give up control over their operation, which long term outsourcing would exatly do.
They would never get the kind of productivity from the Atlas crews. Also, CX would pay the fuel bill - the biggest cost item -, while not being able to control Atlas' fuel policy in the slightest. Not trivial and there is so much more. The devil is always in the detail, which is not exactly the strong point of the current management. I have seen quite a few Airlines getting frustrated by the ways of Atlas. The honeymoon lasted only a few month, followed by some long pain until contract fulfillment. Needless to say, CX would have to pay Atlas some profit as well. By the time all s said and done, it would be way more expensive, than inhouse.
What Atlas provides is flexibility, but at a price.
Then there is the matter of "putting all eggs in one basket".
So chill....
Cheers