I don’t agree with this premise, at least not in the context of the United States. You can even see in recent history where the greed amplified in the 80’s with the phrase “greed is good” becoming popular or that myth about how businesses have a legal requirement to pursue profit over everything got into the American psyche after that case against Henry Ford.

Fuck, charging interest on loans used to be considered a sin in western culture. We explicitly have seen greed change in magnitude.

I also think greed, or perhaps better described as flaunted greedy behavior, has increased over the past several decades. While capitalism has of course always been greed driven, different periods of time and different cultures have set guardrails up as to what level of greedy behavior is and isn't acceptable.

In the US the culture during the prime time of the industrial revolution, capitalism had technology progress propping its greedy appetite up. Those gains have been largely consumed and greed shifted over more and more towards optimizing on labor. We live in an environment now where we no longer assume your employer has your interests at heart and everyone listens to HR and leadership propoganda selling pictures of families and care for their employees while everyone rolls their eyes. We assume our employer will try the pay the least for us and get us to do the most for the least. We assume that they'll replace us the second they have a quantifiable cheaper alternative. Many decades ago these practices weren't as accepted, they certainly occurred, but they came with bad image and cultural rejection that harmed businesses. That isn't the case anymore. Businesses can basically do whatever isn't explicitly restricted by law or more profitable than penalties law sets and its just the accepted state of affairs. After all, it's legal, what are you going to do? Meanwhile through aggressive lobbying businesses are basically writing the law as they see fit.