And that is why I've always kind of looked at the Ferengi as being an extension of ourselves that has been lopped off and made into a species. I've thought that about several of the species; as if Roddenberry wanted to expose those areas of moral turpitude by making them into species that must be challenged or with whom we must contend. I've heard it said now and again that Trek is as close to authentic Shakespeare as we've ever come in modern cinema, and in some ways, I think that is true. We know that G.R. liked to reference old works, and writers have repeatedly referenced them for quotes and story adaptations.
That I know of, there have been no societies that have existed without trade or commerce on some level, and money provides incentive to perform one's tasks. Why else would anyone choose to work on a Starship that encounters danger on a regular basis? I never became 'rich' in terms of money while serving in the military, but the accolades, and prestige that comes with medals and promotions provided extra motivation to perform one's job effectively. But greed wielded its ugly head there too, and there were many examples of persons exaggerating their achievements and 'kissing ass' in order to obtain rank and awards: So an absence of money does not necessarily equate to an absence of greed or gluttony.
There is, however, a tendency to construe money with greed. The majority of people today just want to earn enough to make their lives and their family's lives comfortable. Otherwise, there would be no teachers, nurses, artists or firemen who have extremely rewarding jobs but often work for little pay. Greed is what we see when illegal market trading scams are exposed, and in the exorbitant pay inequities that often exist between many modern corporate executives and those who work for them.
I don't think we will be able to wipe out commerce and money, but it is probably more realistic that humans can eradicate greed to some degree. But even that is unrealistic without a major shift in human thinking. Something on the scale of an annihilating nuclear war could provide the catalyst for such a change.