I would say most people are capable of learning and behaving. But our system is riddled with cancerous tumors that are trying to accumulate all resources to the detriment of the rest of the system.
... in the first-world bubble
There's a hypothetical from an Oxford debate that I am struggling to find that was something like this:
If you are poor family and starving and for every day you could press a button and giant plume of CO2 would get released, but your child would not starve, would not get disease and would lead a fulfilled life, would you press that button?
Every parent would smash that button until their hand bled.
In the first world bubble, we have this button (more or less) but every person on earth would want this button too.
also I want to clarify that my analogy was more about companies than about billionaires
Once we return to a more grounded concept of money, perhaps gold based, where debts are a lot more controlled due to an absence of uncontrolled moneyprinting, growth can then slow down, allowing us more time to digest what's actually good for us and what's not.