This glut of finances leaves those few with a problem: what to do with it? And since accumulation of wealth is the ultimate goal, FOMO encourages increasingly foolish decisions (or at least unsustainable ones).
The housing crisis is one of the outcomes. This AI bubble is another. I'm sure if we look around, we can find other examples.
If resources were more evenly distributed, we would see different regions and peoples doing more varied things which would be appropriate for their needs.