And the upside can be enormous. There's a huge amount of very poor people in India. For example only a few years ago everyone finally got a toilet in their house. Stealing $500 from a slightly demented grandma that is afraid about her medical insurance "running out" can be a lot to them.
Yeah, but it's not $500. It's frequently people being tricked into transferring huge chunks of their life savings to the scammers. Like 5+ figure sums.