Notably, very little of the US economy is plausibly basic needs (a roof over ones head, basic nutrition, actual basic medical care, etc.). The vast, vast majority is essentially luxury goods and services, but Americans have been conditioned to think what the rest of the world considers luxury is actually basics.
If Americans actually cut back to actual basics (a fixer upper small house in a less desirable area), shared a older used car instead of buying several new ones (or a big truck!), made homecooked stews and beans and rice instead of eating out all the time or prepackaged food, stopped buying the latest fancy phones, took care of their health instead of gastric bypasses, dialysis, etc.
Hell, even if the average American stopped taking expensive vacations!
The world economy would likely collapse overnight, no joke. And it would likely be uglier than the Great Depression domestically.
> a fixer upper small house in a less desirable area
A lot of an area's desirability has to do with crime rate. Bulgaria has a homicide rate of 1.088, and the US 5.763. So what would be considered a very safe, friendly neighborhood in the US, would be average or worse in Bulgaria. In this sense, "luxury" is flipped - what Bulgarians would consider basic, would be "luxuriously safe" in the US.
Inner cities and specific (relatively uncommon!) rural areas (often in the Deep South) are what are dangerous in the US, and paradoxically even inner cities are often expensive to live in. Here is a map of homicide rate on a county by county basis [https://commons.m.wikimedia.org/wiki/File:Map_of_US_county_h...].
People often move to LCOL areas anyway to escape the crime and high costs of the cities when there are economic issues in the US.
"Cost of living" correlates fairly well with the available jobs and incomes in a region. You generally can't move to a LCOL region while also having a high paying job. Which is why the possibility of full remote work was so exciting for so many people.
If Americans actually cut back to actual basics (a fixer upper small house in a less desirable area), shared a older used car instead of buying several new ones (or a big truck!), made homecooked stews and beans and rice instead of eating out all the time or prepackaged food, stopped buying the latest fancy phones, took care of their health instead of gastric bypasses, dialysis, etc.
Hell, even if the average American stopped taking expensive vacations!
The world economy would likely collapse overnight, no joke. And it would likely be uglier than the Great Depression domestically.