Can anyone give examples of complementary products that shape industry structure?
Car and gas
Printer and ink
Ball gags and latex suits.
Can you give an example where they increase industry rivalry to serve the demand generated by the purchase of the complement?
Buses and cars with gasoline, the demand is to get places, and both get it done. If gasoline is too expensive then people will switch to riding the bus (if they are fully rational cost-conscious individuals)