Greed proved to be simply good enough during the weekend. Fox's Michael Douglas starrer "Wall Street: Money Never Sleeps" topped the domestic box office with a good-but-not great $19 million in estimated opening coin. Once scheduled for spring release until postponed to adult-friendly fall, Oliver Stone's sequel to his original 1987 financial thriller may have been a bit hampered by the unavailability of its ailing topliner for promo stumping.