I'm not sure flight paths really work as a comparison. There's a limited number of routes and flights. Regional airlines tend to have fewer flights and very specific routes.

Office space seems a bit more eclectic.

Perhaps a better analogy is that your company is giving you a Dell/HP/Apple laptop, not a clevo or ibuypower (or even an inspiron vs a latitude)

Maybe but for expense type stuff... I've done a fair amount of travel and they didn't really care what car rental place I used, airline, etc.