Traditionally, "Greed" has meant desire for gain out of balance with external costs. I mention it not to pick a nit, but because I often seen the "greed is goo

Traditionally, "Greed" has meant desire for gain out of balance with external costs. I mention it not to pick a nit, but because I often seen the "greed is good" idea justified in the same way you (rightfully, in my opinion) justify "Gain is good". Greed, by definition, means the gain which is no longer good!