If it was so easy to move to other countries, many poor people would live enough.

Why? because poor people in third world countries aren't able to afford place and food, unlike in first world countries where the poor people get donation that makes them able to survive.

I've seen many poor people from rural move to city because there are many companies in there and they thought they would easier to get a job. The reality isn't like that, it's hard because they have minimum qualification which the poor can't afford.