I hope it is the second supposition and not the first one.
I can see a lot of traffic between the two cities and would be surprised if ZE were uncapable of turning a profit. While passengers may be mostly ethnic travelers, they are usually willing to pay high-ish fares to go back to see their families.
compete with ZE in the OAK
route, or do they fly to OAK
from other Mexican cities?
Next flights: MEX-LAX AM 738, LAX-PVG DL 77L, SHA-PEK CA 789, PEK-PVG CA A332, PVG-ORD MU 77W, ORD-MEX AM 738