As best I can judge from the Microsoft antitrust case, the Justice Department believes the following: that any seller of an ever-evolving, many-featured product--a product that is constantly being improved by adding new features to every new model--will automatically violate antitrust law if: (1) it regularly sells its product at one all-features-included price; (2) it has a dominant market share and (3) the seller plays "catch-up" by adding an obviously essential feature that has the same function as a product first marketed by someone else.