Comment by Aerroon

>In a different world where there are higher wages, more people would have more spending power.

I don't think that's true, not for random goods. Rent scales with disposable income. If most people make more money, then rent becomes more expensive. Rent essentially vacuums up all the excess money people have available. (Rent = housing in this case)

Why would people want to live in these more expensive places rather than somewhere cheaper? It's because that's where all the (well-paying) jobs are.

When you see Americans complaining about how poor they are you might reasonably ask: okay, but how do people on $poorCountry get by when their income is 5-10x less? It's not like food, clothing, electronics, and other goods are 5-10x cheaper there. But what is much cheaper is housing. (You'll even find cheap housing in rich countries, it'll just be in areas with no jobs.)