“…Since, Hotelling's early study on pricing recommended special taxes on public enterprises or natural monopolies (Hotelling, 1938), far more regulatory attention has been paid to industries such as gas, electricity, water, airlines, post, and telecommunications (Becker, 1986;DeLorme et al, 1994;Eads, 1983;Kaserman et al, 1993). Just as specified in ''Public Interest Theory,'' poor market dynamics are the basis of one important premise for regulation policy; and regulation is just an intervention to correct ''market failures'' (including monopoly, externalities, or some other sources) (Fisher, 1979) or to compensate for ''missing markets'' (Chick, 1990, p. 1).…”