Greed grows and grows and grows until it becomes fatal to an economic system and to a society. As the Bible states, "The love of money is the root of every kind of evil."
Of course, greed is always in the background and there are always greedy people. Healthier societies control people's bad impulses and tendencies, including greed, but others too like infidelity, violence or aggression, and all the other negative traits that cause interpersonal damage.
Just a few decades ago, prices were set somewhat above the production cost per product or service, allowing businesses to make a tidy profit and consumers to have more purchasing power. That has changed. Now, pricing is determined based on how much consumers will bear to spend on a product or service. That change indicates a large increase in the amount of greed that society will tolerate without reining it in.
Since the 1980s, greed has not only become morally permissible, but even morally good or desirable as a trait to have and to act by. So society's brakes against green were not only disabled, but the gas pedal has also been stomped to the floor.
How do you fix this? Well, that requires a profound change in values and thinking that concern how people relate to one another and treat one another, basically, a major social and cultural change is required.
No idea how to pull that off
Christianity did a good job of it during the Christianization of Europe, and it took centuries for Christian ethics to become the norm in Europe, including castigation of greed and anti-usury laws.
It might take a dark age and the conquest of society by a new religion to change our trajectory.