Fitzpatrick v. Villanova University

noting that because plaintiff was a California resident, California courts would be more accessible to him | holding that a “but for” damage model is “fatally deficient” where it provides “no basis for the Court to determine without speculation the amount of damage, if any, caused by any of the particular actions of the defendants” | rejecting use of fully distributed cost in favor of average incremental cost | jurisdiction proper in California over Arizona doctor who practiced near California border and advertised in California | “A predominant market share may merely be the result of regulation____”