What is to stop JB from code-sharing with Moxy and their 60 C-Series airplanes?

Could they replace us on JFK-ABQ, LGB-RNO, etc...?

They would fly the C-Series, effectively replacing JB's E190s, while we grow the Airbus fleet?

Does the TA allow for this?

If so, I'll vote no. Scope is my #1 concern.

GP