Right! there is no greediness that leads you in the end a good results it is always came in a bad result. In fact,you can make trade without that having greediness, because a good traders always think wisely and made the right decision most of the time, especially when they are using analysis in the actual trading.
But you know there is a time that a greediness leads in a good result.
What I mean here is, those whales that purchases cheap altcoins. There are lucky bagholders today in most of the alts holding lots of coins which have now established a good and decent price at the exchanges. Not saying that being greed is always good. Just clearing things that being greed sometimes can lead for a good profits. Well just need some guts to face off all the associated risks.