Text: (If you doubt a small price increase would significantly affect the sales of Windows 95, you must conclude Microsoft is undercharging out of either foolishness or generosity--neither of which is terribly consistent with the way the Justice Department and the public at large think of Microsoft.)
Entailment: They are undercharging either because they are kind or they are not very bright.
Contradiction: They kept raising the prices til no household was able to afford the product anymore.