I think its capitalism that is pulling societies from plenty to scarcity, because that is what the system is designed to do. We didnt have ultra capitalism in the west until the last decade or so. You can blame boomers for becoming rich in that system, or you can realize that your generation would not make a difference.
Now we are in the end game of capitalism where billionaries own it all and the world turns into the masses being monitored by technology, while having just enough to pay the bills. Because if they had enough to stop working for the billionaires, they would.
I dont think any of this has to do with boomers specifically or that they were more selfish than others. It was just the time when capitalism were booming. Now its over and your generation is late to the party... Its just natural.
Perhaps on the other side of capitalism, something more fair comes along, or maybe humanity turns into fascism for a while.