KMB in Hong Kong introduced the KMB Monthly Pass. Some of the cross-harbour bus routes are jointly-operated by KMB and Citybus/NWFB (New World First Bus), i.e. they do have an agreed upon bus schedule served by the two companies on the same route.Since the latter does not offer any monthly pass or equivalence,

What would be the most likely impact(s) of the KMB pass on the markets of the two companies on the same route?Illustrate with the help of the diagrams in the domain of demand and supply.

Please note that KMB and Citybus/NWFB are bus companies.

Thank you!