But wouldn't transaction fees, which are already really rough for people making a first-world salary, be even more unsustainable if that fee is a whole day's wa

But wouldn't transaction fees, which are already really rough for people making a first-world salary, be even more unsustainable if that fee is a whole day's wage (or more) in the places you're describing? And how would those areas of the world have that level of connectivity? e: for making a huge sale of crops or something to another nation, then 1 transaction fee is not bad compared converting at a %, but you'd still need to convert from Bitcoin to a local currency to actually use the money you made.