A narrow way to look at it. Loyality gained from those 100 poor people could allow trust between you that allows you to gain additional value (100 poor people

A narrow way to look at it. Loyality gained from those 100 poor people could allow trust between you that allows you to gain additional value (100 poor people trained becomes a powerful army). While the 10 dollars you gained while driving around someone you missed 100 dollar opportunities.