While I agree with you in regards to things like quality of life, health care, food, housing and many services, in a globalized economy certain goods that one might want to purchase don't scale that much depending on where one lives.
For example, consider an iPhone 13, in this case a black one with 256 GB of storage and not bound to any particular carrier: https://www.apple.com/shop/buy-iphone/iphone-13
It costs 929$.
Now here's the same model in a local store here in Latvia, also an iPhone 13, black color, 256 GB of memory: https://www.1a.lv/p/mobilais-telefons-apple-iphone-13-melna-...
It costs 939€ or around 934$.
You hear a lot about people in US making over 100k$ (with varying taxes) per year, over here this year I'll probably make around 36k$ before taxes and 24k$ after taxes. So essentially when the cost of goods in a globalized economy (for these products that cannot be produced locally) remains consistent across different nations, someone in the US will realistically have a purchasing power that is many times larger than mine.
Actually I wrote about my personal finances on my blog a while ago "On finances and savings": https://blog.kronis.dev/articles/on-finances-and-savings
Note: I don't consider myself as someone who can actually afford Apple devices, just using them as one example of that kind of a good; nobody is going to give you a car 2-3x cheaper just because you're from Latvia either, or a computer, or many other goods.
Of course, your argument does hold true for other things, for example it's possible to rent a studio apartment here for around 300-400$ per month. Also my university degrees were free (though people with worse grades might have to pay if there are not enough budget places allocated) and I haven't had any significant healthcare expenses myself as of yet.