Smart answer:
Your search for ′Who said greed is good in the movies′ returned the following results:
Oliver Stone and Michael Douglas
The Final Word: In 1987, Oliver Stone and Michael Douglas taught audiences that “Greed is Good.”
Source:
Michael Douglas
In the infamous movie “Wall Street” with Michael Douglas playing the shoe-shined, spit-polished, and dressed to the nines villain, Gordon Gekko, Michael Douglas uttered the phrase “greed is good.”
Source:
Gordon Gekko
In the two Wall Street films, Gordon Gekko championed the notion that greed is good.
Source:
Adam Smith
What Adam Smith said is, that greed is good and that by becoming richer you benefit everybody, not just yourself.
Source:
Oliver Stone
A year after Oliver Stone elevated the phrase “Greed is good” to a satirical double-edged mantra in Wall Street, John Carpenter put Wall Street more bluntly in John Carpenter Live (1988), a scruffy little genre movie with a subversive subtext.
Source: