You put the /s, but I don't think this comment is inaccurate in any way. Some people really have enthusiasm for nothing but making money. No hobbies, no interests, no friends, no other goals.
It has also been understood to be fundamentally inherent to humanity as a consequence of our "need to survive", so trying to regulate it away is just inviting people to skirt said regulation
Since it's unavoidable, the best next thing is to design a system which takes greed as an input and outputs productivity. That system is called Capitalism and that is why it always wins.