If your right eye causes you to sin, pluck it out. A popular radio and television personality said that greed can be good because it makes capitalism work well.
Moderation is a virtue, but it can never apply to an action that is immoral.
Lust, greed, or sin of any kind and in any amount is always wrong. Christians who are serious about pleasing the Lord will continually examine and judge their inner thoughts and motives. They'll confess and repent of greed as a motive for making more and more money. And they'll work at disciplining their thoughts and actions. But don't fall for the idea that a little sinning is all right if done in moderation.