Quoted By:
OP, very few people live in the Santa Monica mountains and the few who do are filthy rich and they'd have to drive from their villas way up in the hills to get to a bus stop on the PCH anyways. The farther west you get from the city the lower the population density becomes, and after the mountains end the Camarillo plane is all farm fields until you get to Port Hueneme/Oxnard. There is no bus service because there are no people to serve.