You just used the “P” word.
For clarity, I mean it in a general way. We all have prejudices that form our judgments in various areas. Greed is one area where I personally see evidence (circumstantial though it may be) that the predisposition is there for most of humanity.
Now, having met some “old money” and “new money” rich folk, I would say you can even make an argument that among some of the “old money” folk, greed is
less of a problem, than for the poor. When you are born with a bunch of money, you may, ironically though it may sound, be less predisposed to greed. However, if you are born without (as I, and probably most of us are), at some stage in your life you may very well fall into greed and envy because you would like to have what those “old money” folk have.
In my teens and early twenties, the idea of making a lot of money, nice cars, big house…basically the “lifestyle of the rich and famous” was my goal. I have earned in the upper middle class range of income, dropped down to lower class income for a period of time and am now pretty much in the middle (though I could, despite my
best efforts, become “filthy rich” at any moment if the right number of customers book large orders

).
That said, while I still have to work on my attachment to material goods (IMHO most of us have to), my “greed” is not even close to where it was when I was younger. Even if I did book extremely large orders, my wife and I have discussed that we wouldn’t move to a larger house, have no desire for a second home in Europe (as we once did), etc. It just isn’t important to us anymore.
So somehow, in the path from my poor upbringing to my middle class life, I became less greedy. This seems completely normal and logical to me, but I can see where others don’t get it. It is a matter of perspective.