Being able to buy whatever you want at the super market is probably a top 25% of the US perspective if not more.
On the other end of the spectrum, 50-70% of US families were living paycheck to paycheck even before covid, so I'd be moderately surprised if the top 25% could afford whatever they wanted at the supermarket.
> The minimum net worth of the top 1% was roughly $10.4 million, according to Forbes. The top 10%, on the other hand, has a net worth of about $1.2 million.
[https://www.investopedia.com/financial-edge/1212/average-net...]
Obviously. But if the figure is exclusive of their primary residence their return on investments isn't especially impressive-- e.g. it's sub index fund rates even assuming they have no other income than gains. :)
I wouldn't expect 'given' year effects to be relevant, as it's averaging over a large number of people. Taxable is a better argument, since as you reach the highest marginal tax rates there is a lot of reasons to find ways to indefinitely defer paying taxes (e.g. die with it and pass it with stepped up cost basis).