Money has become more valuable than life which is a result of a Separation Mindset, the perception that we are not all innately connected. This Separation leads to "others" who are devalued as less-than ourselves, thus can be honored and respected less, and treated with less care and consideration.
As a Separate entity we think our self-value only comes from what we can get and how we can appear to be better than "others".
When money is more valuable that the lives of "others" and "they" re less valuable, we will use and abuse "others" to get more for ourselves, to feel better about ourselves by getting over on them in some way.
So the predatory money getting behavior is the result of this perceived Separation from both ends, the desire to get more money however we can for ourselves, and "others" are of lesser value than ourselves.
Money has become a score card for our self-value, and because of this insatiable appetite to get more and more, it is needed in our society for most everything, thus is the gatekeeper for most human activity.
Basically, greed is an outcome of perceived Separation that leads individuals to seek the opportunities to get more any way that they can, such as when "others" are in need and vulnerable. This exploitation for personal self-value need only will happen when money is more valuable than the "others" we don't perceive we are connected with. Thus we think it is our "right" to do whatever we want, however we want, whenever we want, to who and whatever we want... allowing us to abuse, harm, and destroy what is not Me, as we do what we do to get what we want exclusively for ourselves!
It is our perceived separation, not thinking we are innately connected with everyone, with everything, that is the root of all human caused so called "problems", where it is this acquired perception of Separation that is the only real human "problem" error. This perceived Separation leads to all exclusively self-serving thought and behavior, as well as fear, hate, and divisiveness. It is the basis of all human abuse, harm, and destruction.