Concepts based on this take no account whatsoever of the differences in currencies and local/national economies that lead to incredibly different costs of normal life in different towns within a state, let alone between different countries around the world. If it were somehow possible to magically level USD incomes of all families depicted in this chart, perhaps to an arbitrary median of $2500/mo, many of the poorest families would be very wealthy — or at least very well-off — by their local standards, while many of the high-income families would lose their homes, healthcare, and means of income due to their local costs of living. It’s always so strange to me that people seem unable to comprehend this simple fact that nearly all of our international economics today are predicated on exploiting.

what is your point? as far as i can tell the pictures only show the reality. they don't explain why. the interpretation is up to the reader.

my personal experience suggests that cost of living vs living standards is pretty uniform globally if compared on a national level. (at least in the places i have been to. higher cost of living in a country always also meant higher living standards, and vice versa. differences only mattered within a country with popular locations being more expensive, and there mostly it affects the cost for homes.). so your idea that raising poor families to $2500/mo would make them wealthy is only true if they don't try to change their living standards.

and what does that have to do with international economics being based on exploitation? again, that's an interpretation of the things we can see here. i don't disagree with the interpretation, it's just that the photos do not themselves make the interpretation, they only observe.