A "street talk" feature on a radio station sought tourist reaction to higher gasoline prices. Gasoline prices typically rise during the summer, a time of heavy tourist traffic. Here was one response: "I don't like 'em [the higher prices] much. I think the gas companies just use any excuse to jack up prices, and they're doing it again now." Discuss how does this tourist's perspective differ from that of economists who use the model of supply and demand?