I look at things like the car market, where the top end is basically being floated by oil princes, trustfund kids and early crypto investors. Even have mass production companies like Mercedes starting to focus more on "handcrafted limited release" cars they can make 30 of, and flip at a few million each.
The wealthy seem to seriously believe they've amassed enough money at the top that they can sustain the economy without anyone else participating. And unfortunately, it's looking more and more like the data supports this belief.

Halo infinite was pretty huge though, wasn't it? Granted one being the only stand out isn't saying much.