Something doesn’t sit right though, no? You can’t fix horrendous pollution regardless of the amount of money you have and the differential of the modern/developing economies yields. You might have a bigger garden but the city won’t have a biking lane. You might be able to afford private health care but if you rely once on public care (ie: you get into an accident somewhere) then you are screwed.

It’s more expensive to live in a non-developed country than a developed one. Now a close to developed country might be an interesting choice since the prices are still low but the quality is fairly similar.