Is there such a country that lives on just $1 a day? I live in a third-world country which I consider to be a poor country and the minimum wage here is at $10 a day.
As some other members have mentioned, it is the countries in the African region.
I also doubt they would bother to buy and own bitcoin. As a poor individual, your priority is to survive through the day. You will prioritize being able to buy food and pay bills rather than buy bitcoin. Most of them don't plan to have investments and contented to live what they can afford.
I also doubt people with such low incomes would be interested in bitcoin because they are struggling to put food on the table, I don't think they would have time to bother with anything else.
But I don't think they are satisfied with their current standard of living, they are just like us, they have dreams and aspirations but basic needs and family still come first. People with such low incomes are really going through the worst of things in the world and we are not in their shoes, it is hard to feel what they are facing.