The underlying economic difference is that people are reluctant to give money to the poor because they see the level of one's wealth, but it is not wrong to help a hungry person just by giving money. But if we give them automatic money they will be lazy to find a decent job
Poverty is the main cause of scamming and extortion. There are other personal reasons, like greed and being not contented leads people to such an act of evilness. But, we are leaving in a society where we are bounded by laws that forbids such actuation. Hopefully, the innovation brought by the development of bitcoin will help people to earn money in the easy and rightful way.